Kitty Wells and Johnnie Wright, June Carter and Johnny Cash, Tammy Wynette and George Jones, Faith Hill and Tim McGraw: The history of country music abounds with couples whose love and lives have, to varying degrees, played out on the public stage. Some have enjoyed long, stable relationships. Others have transcended challenge after challenge and endured. Others crashed and burned only to leave music of untold beauty in their wake, while still others occasion speculation about just how long they’ll stick things out.

Alt-country sweethearts Buddy and Julie Miller are hardly household names like the celebrity couples invoked above—underground heroes is more like it, given the Millers’ retiring, even reclusive, bent. In fact, if Brooks & Dunn, the Dixie Chicks, and Lee Ann Womack hadn’t cut their songs, the two would doubtless have little, if any, truck with Music Row. And were it not for Buddy’s ringing, Don Rich-inspired guitar runs and the pair’s shimmering, hand-in-glove harmonies, many probably wouldn’t even consider the Millers’ blues-, rock-, and gospel-dappled twang country to begin with.

Yet as even a cursory listen to their luminous catalog reveals, few couples, country or otherwise, have known the depth of intimacy the Millers convey through their music. Since moving to Nashville from Los Angeles eight years ago, the pair have quietly written and recorded a body of work that, a decade from now, will likely stand with, and very well surpass, that of their forebears Gram Parsons and Emmylou Harris.

Each of the Millers’ albums for the HighTone label—two under Julie’s name, three under Buddy’s, and a new duo record, all of them fiercely collaborative—is a monument to passion and empathy. More than just music, these records are burnt offerings—not just to the God the Millers love and serve, but to the spark of the divine within all people, to the utter indestructibility of the human spirit. When, on the new Buddy & Julie Miller, the couple testify that their love could hold up the sky when hard rains fall, it’s neither narcissistic nor sappy, but prophetic. It’s a conviction born of their faith that the love that radiates from each of us has the power to heal and transform the world.

Though acutely spiritual, the Millers are a pop—or at least semi-popular—act, as opposed to a gospel or a contemporary Christian one. The couple’s music and message don’t just transcend piety and dogma; their records suggest possibilities for human communion that have the potential to speak to people of any faith or worldview.

Take “Rachel,” a song from their new album. “There is a life no one can take / There is a chain of love no one can break,” the Millers affirm, their braided voices buoyed by the swelling strains of Buddy’s harmonium and Phil Madeira’s Hammond B-3. These lines, which resonate so much more after this month’s terrorist attacks, weren’t arrived at lightly. Julie wrote them after reading Rachel’s Tears, a book based on the journal of Rachel Scott, a preternaturally kindhearted 17-year-old who was the first of the 13 students shot and killed at Columbine High School in 1999.

“When I read Rachel’s story, I just cried from beginning to end,” Julie says, sitting next to her witty but ever-laconic husband in the living room of their Victorian Hillsboro-Belmont home. “She was just so kind to the kids who were rejected at her school, so full of compassion. She also knew that something terrible was going to happen, because in her journal she referred to her school as ‘these halls of tragedy.’ I can’t believe I could miss someone so much that I’d never even met.”

Julie’s link to Rachel Scott is the natural outgrowth of an openness that shapes her response to all the suffering she encounters. “100 Million Little Bombs,” a song she wrote with Buddy, rues the fields of uncleared landmines the world over that claim 500 victims each week, many of them children. And she dedicates “Broken Things,” the title track of her latest solo album, to the 29 people who were killed and the hundreds who were injured when a bomb went off in the Northern Ireland village of Omagh in 1998.

But it isn’t just mass catastrophes that move Julie to such depths of empathy. Her solo albums also include laments for, among others, a sexually abused child (“Dancing Girl”), a mentally ill homeless woman (“All the Pieces of Mary”), and a war orphan (“Maggie”). In other words, Julie’s heart goes out to all who are broken or, to invoke the title of another of her songs, come “by way of sorrow.” This is to say nothing of her affinity with animals, including her nine cats, all of them strays—and, in her eyes, all God creatures. For a while, she even sheltered a possum.

Undergirding Julie’s emotional identification with the hardship of others is the agony she herself has known: everything from an abusive father, to years of shattered self-esteem, to living with fibromyalgia, a condition that afflicts sufferers with chronic, debilitating pain. It’s as if, to invoke theologian John Mogabgab, her own wounds have “become portals of vulnerability through which the pain of others can enter [her life], awakening [her] to a more generous sense of our common humanity and discovering in turn refuge, consolation, and healing.”

“When I look at the world I see a painful planet, a place full of people who are orphaned in their hearts and souls,” she explains. “Which is just how I felt, orphaned, before I came to know God, [who] put this deep concern for people in my heart. I’ve wanted to bring comfort to hurting people ever since.”

Yet Julie is hardly all doom and gloom, as her rather cockeyed rapport with critters, her penchant for kooky hats, and her otherwise often pixilated demeanor attest. Nor does the empathy that suffuses the Millers’ records begin and end with her lyrics. It’s nearly as evident in the way Buddy cradles and echoes that compassion with his at times brooding, at times wailing guitar lines. Or in the way he’ll reel off flurries of notes that lunge forward as if reaching out to someone who’s falling or has fallen. Buddy betrays much the same heart when his vocal cries anticipate and embrace Julie’s, or when, in a burst of call-and-response, his shouts and moans bounce off hers, giving voice to emotions that words can’t possibly convey.

“Buddy’s very tenderhearted,” Julie says. “He’s very tuned in. You wouldn’t necessarily know it by looking at him, but when he sings and plays music he’s expressing his deepest feelings. If you really want to know Buddy, you have to hear his music.”

“That’s Just How She Cries,” a soulful ballad from the duo’s new album, certainly suggests as much. Julie wrote the song, presumably for a friend who was going through her own dark night of the soul, but Buddy sings the lead, transforming it into a study in empathy, an ode to the way Julie harbors the hurt of the world in her heart. “She is talking / But she speaks in code / Like a broken heart replies / Because that’s just how she cries,” Buddy sighs, caressing each word like a latter-day James Carr. The turnabout could hardly be more breathtaking, particularly with Julie lending her tear-stained harmonies throughout.

The Millers enjoy an unspoken communion typically heard only among kin, or among those who have lived together for years. In their case, that’s been since the mid-’70s, when Buddy joined a little-known, Austin-based “hippie band” in which Julie (née Griffin) was singing. Married in 1981, the couple spent much of the ’80s in San Francisco and Los Angeles, where Julie pursued an all-too-constricting career as a contemporary Christian singer and Buddy worked in the bands of pal Jim Lauderdale and others.

Buddy attributes the uncommon bond he and Julie share to the fact that they grew up together musically. “We know each other so well that we have a kind of telepathy going on,” he says. “Whenever we do something together, it becomes something else. It’s kind of like a third thing.”

The Millers’ friends and collaborators—a group that includes the likes of Steve Earle, Emmylou Harris, Gurf Morlix, and Mark Olson and Victoria Williams—certainly hear this ineffable “third thing” in the couple’s music. Harris is most aware of it in their harmonies, which she claims are utterly unique. “They do tricky little things that sound so completely natural,” she says. “I’m not sure if they work them out in advance or whether it’s something about the way their phrasing comes together.”

Indeed, when the Millers sing together, they do much more than make the notes work. Their voices—hers gauzy, his reedy—modulate in much the same way as partners who anticipate each other’s moves on the dance floor, or in bed.

Oddly enough—and despite the intensely collaborative nature of their solo projects—it wasn’t until this past summer that the Millers, now both in their 40s, found time to make an album that explicitly manifested that elusive “third thing” of which Buddy speaks. For starters, one or the other always seemed to have a solo album to finish. And, as a sideman, Buddy is never without a rash of studio and road gigs lined up. Besides playing guitar in Harris’ Spyboy, he’s toured with Steve Earle’s band, played on sessions for Lucinda Williams and Allison Moorer, and produced records by the likes of Jimmie Dale Gilmore and Vigilantes of Love. The last of these were done at Dogtown, the studio Buddy built in his and Julie’s home. Until recently, there just wasn’t time to record the duo album the couple had been talking about making for the last few years.

As it turned out, Buddy and Julie Miller wasn’t what either of them imagined it would be. “We both meant to make a real country record; I mean a real country record,” Buddy admits. “And it started out that way. We were doing almost nothing but waltzes. In fact, we said, ‘Maybe we should just call it Buddy and Julie Sing Waltzes.’ But then we kind of veered left. I’d been gone most of the year touring with Emmy, and Julie had all these great song pieces started.”

“The one who writes the songs gets to have their way,” she cuts in, erupting in peals of laughter. “We had a couple songs that we’d been doing live that were good duets,” she adds, referring to Bob Dylan’s “Wallflower” and Utah Phillips’ “Rock Salt and Nails,” the latter best known from Steve Young’s riveting 1969 recording.

“We really would have liked to have had the time to go, ‘OK, let’s write all these country duets and do this more country thing,’ ” she continues. “But we were kind of pressed for time, and I already had this overflow of stuff, so we just said, ‘Maybe this is what it is.’ ”

What that is is a record very reminiscent of the couple’s intimate and incendiary live shows (minus Julie’s rabbit-chasing between-song banter). There’s the lovelorn “Forever Has Come to an End,” a breathtaking, Carter Family-inspired ballad sung as a trio with Harris. And there’s “Dirty Water,” a dyspeptic swamp blues in which Julie’s eerie moaning conjures the ghost of Skip James while Buddy hacks off fat, dirty guitar figures à la Pop Staples, someone he often used to go hear at the Fillmore as a teenager while growing up in New York.

The album also includes a cover of Richard Thompson’s “Keep Your Distance,” just the sort of surging—and wrenching—anthem that lends itself to the pair’s aching harmonies and Buddy’s flair for channeling U2’s The Edge on guitar. And there are studio versions of the aforementioned “Wallflower” and “Rock Salt and Nails.” Both border on definitive, notably the former, in which the Millers transform Dylan’s woozy plaint into a plea of existential urgency—that of two lost souls starved for sexual and spiritual liberation.

This commingling of carnal and godly impulses is evident elsewhere on the album. “It’s like a kiss of a lover,” Buddy sings on “The River’s Gonna Run,” professing his desire to “live when I die and shake my soul loose from time”—that is, to know the joys of salvation. Yet that’s tame compared to “You Make My Heart Beat Too Fast,” on which Julie could pass for a descendant of Teresa of Avila, the sainted 16th-century mystic who rankled her Carmelite sisters with graphic details of her “love affair” with God.

“You make me think I could miss you / You make me think I should kiss you / You make me want your affection / We need to make a connection,” Julie burns, her yearning to be closer to God sounding positively like a come-on. The music only underscores this eroticism, especially Buddy’s bluesy guitar barbs, spurts salacious enough to make Ike Turner blush.

Of course, from St. Teresa to Prince, there’s a longstanding tradition of using sexual imagery—that which conveys some of the most intimate communion two people can share—to express the heart’s longing for God. Nevertheless, it was hardly the kind of thing Julie envisioned herself going on about while growing up Baptist in rural Texas.

“When I first heard about [Teresa of Avila] years ago, I thought, ‘Now, that’s weird,’ ” she admits. “Back then I couldn’t even imagine thinking something like that. But more and more it made sense to me. The Bible says that God wants desperately to be with us. Why shouldn’t we hunger for God much as we do for our lovers—even more?”

Other songs on the Millers’ new album concern themselves with more earthly relationships, many of them stormy, even tragic. It’s likely to strike some as ironic that two people who seem to be so happy together sing as convincingly about bad love (“Rock Salt and Nails”), sad love (“Forever”), even mad love (“Little Darlin’ ”) as the Millers do.

“We’ve lived long enough to have gone through some of those things we’re singing about,” Julie explains, alluding to, among other things, the couple’s struggles before they were married. “We may not have been going through them at the time we recorded these songs, but [those experiences] are still in our hearts.

“I also think, a lot of times, singing those kinds of songs can be cathartic,” she continues. “When I was growing up, my mother used to play Hank Williams and Ray Charles singing the most incredibly heartrending songs. Then later I got into Ralph Stanley, Muddy Waters, and people like that. There’s a depth of emotion in their music, much of it sad, some of it angry, that speaks to a place deep inside us all.”

Depth of emotion. When talking about the music—and lives—of Buddy and Julie Miller, the conversation invariably circles back around to deep emotion, and perhaps nothing in the couple’s incandescent catalog evinces more feeling than “My Love Will Follow You.” A beacon of seemingly boundless steadfastness and desire, the song, yet another they wrote together, stands as the high point of Buddy’s first solo album, Your Love and Other Lies.

“If you should go so far / That you cannot get back / You may not remember / But my heart will not lose track,” he vows as heaving piano and steel guitar transport him from the record’s penultimate chorus to the bridge. Musically and emotionally, the passage is so expansive, you’d swear it could span the chasm that separates not just the two lovers in the song, but the one between heaven and earth as well. Indeed, it could be giving voice to the heart of a God who suffers with and is very much present in the world, even amid unspeakable loss.

It’s precisely this multivalence, these layers of meaning so rich in passion and humanity, that sets the Millers’ music apart from that of so many of their peers—and that gives their performances such relevance and power. Many of the couple’s songs witness to much more than just a bond between two individuals, but to a larger force that binds all people together, a force that makes empathy and healing possible in the first place. Rather than merely turning in upon itself, the love the Millers sing about so ardently extends outward and upward and ultimately might be able, as they claim, to hold up the sky.

“It doesn’t necessarily make the pain go away, but it means we’re not alone, and that, in itself, can bring about some healing,” Julie maintains. “It’s like God says, ‘When you go through the fire and you go through the water, I will be with you.’

“I just can’t imagine how anybody could stand going through the fire and the water by themselves.”