Heinz Karl Gruber

Heinz Karl "Nali" Gruber (b. 1943), who styles himself HK Gruber professionally, is an Austrian composer, conductor, double bass player and singer. He has composed music for Yo-Yo Ma and Håkan Hardenberger. 
Gruber appeared in The Ghost of Faffner Hall episode "Reacting to Sounds". During Fughetta Faffner’s half century sound check of Faffner Hall, Fughetta hears a few ghostly sounds and finds a symphony orchestra under the direction of Heinz Karl Gruber in one of the rooms.
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Category:Celebrities
Category:Ghost of Faffner Hall Guest Stars