Chances are, if you don’t love Silkworm, you’ve probably never heard of them. The late Chicago trio never featured a college-rock heartthrob like Stephen Malkmus or an underground guitar hero like J. Mascis. And they never achieved the (near) crossover success or sacred-cow status of iconic indie-rock contemporaries like Pavement or Dinosaur Jr., instead existing contentedly within the margins from 1987 to 2005. But in that time, the band’s inverted amalgam of classic-rock heroics and jagged indie-rock — captured over a sprawling nine LPs — was every bit as unique and timeless as those more famous bands. Yet Silkworm rarely played for more than 50 people, probably the only ones in each city who bought the records. But what the band’s followers lacked in numbers, they made up for in dedication. One such super-fan, local filmmaker Seth Pomeroy, recently wrapped Couldn’t You Wait, a full-length documentary telling the band’s story. It’s a tale that ends in tragedy — a senseless car accident claimed drummer Michael Dahlquist’s life in 2005. A true best-friend band, Silkworm always seemed like it’d stay together forever — and to a certain extent, it has. Surviving members Andy Cohen and Tim Midgett’s new project, Bottomless Pit, sounds Silkworm-esque, as one might imagine, yet understandably sparse and somber. 2010’s Blood Under the Bridge is its second and most recent LP.