West Philly-based mad man DJ/composer Ramble John “RJ” Krohn hasn’t dropped an album under the RJD2 umbrella since 2010’s rocky The Colossus, but that doesn’t mean we haven’t heard from him. Using his own label, RJ’s Electrical Connections, the motherfucker reissued a box set of all his old material, titled 2002-2010. He’s also started up quirky indie-rock-hop ensemble Icebird, working with Aaron Livingston from the local band The Mean. The pair recorded a wonky vocal-based album in 2011, Abandoned Lullaby, that is as dense as it is kind-of danceable in a white-guy-overbite fashion. Even more covert for RJD2 is We Are the Doorways, a murky recording made under the pseudonym The Insane Warrior. Keep your eye on the guy next to you at TLA on Saturday. Could be RJ.
Sat., Dec. 29, 8 p.m., $20-$35, TLA, 334 South St., 215-625-3681, livenation.com.