There are seven bands with this name:
(1) Unison is a French witch house duo started in 2008 and released their first eponymous full-length album "Unison" on the 10th April 2012 through Lentonia Records..
(2) Unison is a Florida rock band, formed in 1994.
(3) Unison was a New York hard rock band from the seventies known for their self-titled album from 1976. Read more on Last.fm