Local experimental duo Archer Spade (Dan Blacksberg and Nick Millevoi) will perform the world premeire of “TCHMENTREACH,” a piece they commissioned from prolific avant-garde metal guitarist Mick Barr, in West Philadelphia tonight. In addition to the premiere, Barr and composer / clarinetist Jeremiah Cymerman will perform solo sets of their dark, twisting improvisations.  More information on the show at The Rotunda can be found here.  Watch videos of the performers below and learn more about Mick Barr in the 5049 Podcast with Jeremiah Cymerman here.