Hedeomik

The Hedeomiks were a technologically advanced civilization from the Delta Quadrant. The Borg Collective knew them as Species 9552. 

History
In June/July 2382, Federation mission specialist Seven of Nine, a liberated Borg drone, visited Lillestan and noticed that the live music in the smoky bar Jewl's was provided by a quartet of identically attired Hedeomiks. Their instruments were partially submerged in green liquid.