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.. https://lentoniarecords.bandcamp.com/album/unison https://soundcloud.com/weareunison (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