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.

(4) Unison is a hardcore band from Belgrade, Serbia.

(5) Unison - a breakbeat artist from Bulgaria

(6) Unison - a Hiphop / Rapship trio from Manurewa, South Auckland, New Zealand - see Unison on Facebook

(7) Unison - an Austrian hip hop crew Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.