There are at least 3 solo musicians and one band who are known by the name OSA.

1) OSA (or Omid Sadeghi-Alavijeh) is a one man acoustic band. Having split form the small time punk rockers FAD, he went on to record a number of tunes form his home in North London. Having only been around for about 6 months he is a new musician on the scene with a small but loyal fanbase.

Check him out at www.myspca.com/omidsa

2) OSA, short for Osamede (meaning God crowns you) is an MC originally from the Bronx NY and currently located in Los Angeles CA.

3) Øyvind Osa, bass player and vocalist in Norwegian stoner rock outfit El Caco, also has a solo project where he only uses his surname.

Follow his Facebook page: https://www.facebook.com/osaartist

4) The band Osa is from Bellingham, WA. The name means female bear in Spanish. The band is composed by Jake Heinen on bass, Alex Ferrin on drums and Toby Reif on guitar. They sound kind of shoegazy punk with some math influences. They are now split up. Their only album is available for free on bandcamp here: http://osabellingham.bandcamp.com/ Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.