M.S. Waldron may be best known for his work as irr. app. (ext.), an unwieldy moniker that begets uncanny, hallucinatory sound. Steven Stapleton is the genius behind Nurse With Wound, the consistently unpredictable project that scrambles musical obsessions for krautrock, surrealism, and avant-garde composition into a brash quest for expressionism through experimentation. Sigtryggur Berg Sigmarsson hails from the Icelandic electro-absurdist duo Stilluppsteypa, which continues to investigate the finer points of drunken minimalism. Jim Haynes prefers to merely state that he rusts things. R.K. Faulhaber is something of a mysterious figure, looming around Mr. Waldron's irr. app. (ext.) recordings and performances while keeping his own work a hermetic secret.