- Social Registry
- Sam Hillmer (tenor saxophone)
- Ben Greenberg (electric guitar)
- Amnon Freidlin (electric guitar)
- and Ian Antonio (drum set)
- Theatre of a Two-Headed Calf
- Pygmy Shrews
Zs was founded in 2000 and has existed as a trio, sextet, and quartet, now solidifying into the quartet formation of Sam Hillmer (tenor saxophone), Ben Greenberg (electric guitar), Amnon Freidlin (electric guitar), and Ian Antonio (drum set). While Zs' music has been variously categorized as no-wave, brutal-prog, and post-minimalist, it is primarily concerned with making music that challenges the physical and mental limitations of both performer and listener. Manipulating extended technique, unique instrumental synthesis, and near telepathic communication, Zs aims to create works that envelop the listener and unfold sonically over time, evoking unspoken past, present, and future rites and ritual.