There are at least 8 bands with the name Koma:

1. KOMA is a Thrash/Groove Metal band from Pamplona (Spain). They started in 1994 and recorded their first Demo in 1995. After they've recorded 8 albums mixing Groove Metal, Punk and Rock´n´Roll with little touches of basque culture.
http://www.koma.eshttp://es.wikipedia.org/wiki/Komahttps://www.facebook.com/komaoficialhttp://www.discogs.com/artist/1815609-Koma-16https://www.metal-archives.com/bands/Koma/35541

2. KOMA - french rapper of french group Scred Connexion

3. Koma from Sweden. Released the album Tsunami before changing name to Khoma in 2006.
Features member from bands such as Cult of Luna, Plastic Pride and The Perishers.

4. KOMA - polish rapper of Białystok group PWRD (Projekt Wszystkie Rymy Dozwolone - Project All Rhymes Permitted)

5. Latvian group. One song in album Odekolons #11 (2003)

6. A band from Novi Sad, Serbia formed in 2009. that plays instrumental and progressive fusion music. Here is their MySpace.

7. Sludge/doom metal from Vancouver, British Columbia, Canada

Bandcamp

8. Leeds/London hardcore punk band featuring members of Vile Spirit and Hex.

Bandcamp
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