Some of us have been around Nashville long enough to remember when Keith Alberstadt was hanging out with fledgling improv and sketch comedy groups while he was sharpening his wry observations about the modern world and honing his stand-up skills. The native Nashvillian and former Vanderbilt Commodore has done nicely for himself, but not without plenty of hustle — he’s logged thousands of miles in and out of comedy clubs everywhere, and entertained the troops overseas. Alberstadt lives in New York now, and his ever-improving comedy profile now includes two appearances on Letterman, contributing bits to SNL’s “Weekend Update,” and regular spots on Fox News’ “Red Eye” panel (as the token comedian — go figure). Clubs, private parties and corporate gigs continue to fill the Alberstadt schedule, and he’ll be back in Afghanistan in October making soldiers smile. He’s also got a couple of CDs for sale on his website, keithcomedy.com. Also appearing on this bill is Old Hickory’s Nate Bargatze, a likable but slightly under-the-radar talent who gets lots of mileage from understated, ironic material, much of it poking fun at his Italian/redneck heritage. Bargatze has added three appearances on Conan to his résumé, as well as a featured slot at the Montreal Comedy Festival and his own half-hour special on Comedy Central. Check him out on YouTube for a sampler, or visit natebargatze.com. This lineup should provide the funniest local hump-day that comedy fans have experienced in a while.