For over four decades, composer-performer David Rosenboom has developed unique circuitry and software for making musical models of the wondrous natural world come alive. Traversing the raucous and the sublime, ROUNDUP TWO presents live performances with vacuum tube analog computers, solid-state manifestations of chaos and harmony, musical interventions on political tunes, virtuoso performers interlinked with hybrid processing, and more. ROUNDUP TWO is an essential, historical document containing important examples from a sixteen-year period in this innovative artist’s extraordinary, pioneering work."Several of these pieces appeared in an audio, cassette package released in 1987 by Slowscan editions, ‘s-Hertogenbosch, The Netherlands, titled Roundup, A Live electro-acoustic retrospective (1968-1984). For Roundup Two, all those pieces have been re-mastered from tapes in audio archives that were in various states of preservation. Several that were originally presented only in excerpts are now presented in complete, unedited versions, and other works not on the original Roundup have been added." - David Rosenboom

"The concert of David Rosenboom was a dream come true concert that was able to take place thanks to the collaboration of DePlayer, CafeOto and les ateliers claus. It became a memorable concert with a little stress beforehand as David Rosenboom got robbed on a train in Rotterdam hours prior to the concert in Brussels. The rest of the day we went looking for all the missing pieces of the puzzle in order to let David Rosenboom perform the concert the way he wanted to. Please check the notes of the night itself + per track David Rosenboom wrote the notes." "This concert was presented at Les Ateliers Claus with a 6.2 sound system using unique, quasi-3D sound diffusion algorithms written by the composer-performer. The result was captured in multi-channel recordings that have been rendered here in stereo in a way that hopefully preserves at least hints of the original, immersive sound environment." David Rosenboom --- Mixed and mastered by David Rosenboom.

David Rosenboom's legendary Brainwave Music, originally released on A.R.C. Records in 1975. This is an expanded double-LP edition with over 40 minutes of additional contemporaneous material. Pioneer of live electronics, innovator in music education, collaborator with artists as diverse as Jon Hassell, Jacqueline Humbert, Terry Riley, and Anthony Braxton, Rosenboom is renowned for his ground-breaking experiments with the use of brain biofeedback to control live electronic systems. Each of the three pieces that make up the original Brainwave Music LP integrates biofeedback with musical technology in different ways. In the side-long "Portable Gold and Philosophers' Stones", four performers have electrodes and monitoring devices attached to their bodies to receive information about brainwaves, temperature, and galvanic skin response. This information is analyzed and fed into a complex set of frequency dividers and filters, manned by Rosenboom, but essentially played by each of the performers through their psychophysiological responses.