There are at least 5 artists that go by "Blackmail"
1. German indie rock band
2. New York City funk/rock band
3. Greek neo-psychedelic rock band
4. Swedish hard rock/prog rock band
5. Detroit Ghettorock/hard rock/funk band
6. Hardcore Punk band from Sofia, Bulgaria. 1.) Blackmail is a German indie rock band from Koblenz, Germany which was started briefly in 1994 by singer Aydo Abay, brothers Kurt Ebelhäuser (lead guitars) and Carlos Ebelhäuser (bass) and drummer Mario Matthias.

Read more about Blackmail on Last.fm.