[1] In 1989 he formed the sludge metal band Asbestosdeath, taking up bass and vocal duties, with Chris Hakius on drums and Matt Pike and Tom Choi on guitar.

[4] Following Choi's departure, Cisneros, Hakius and Pike recruited Justin Marler on guitar and renamed themselves Sleep.

Since then, Om has released the two full-length studio albums God Is Good and Advaitic Songs on the Drag City label, a 7" for Sub Pop entitled Gebel Barkal, and the live vinyl-only LP Conference Live on Important Records.

Om's 2012 tour for the Advaitic Songs album included Robert Lowe on backing vocals, guitar, synthesizer and tambura.

[10] In December 2012, Cisneros released his first solo record Dismas on the band's own Sinai imprint, following the religious tones themed in OM but with more of a dub approach.