 Demby continued to develop her experimental musical instruments, which she called the Whale Sail and the Space Bass.These 10-foot-long sheet metal idiophones are played with a bass bow to create low resonating tones.George Lucas' Skywalker Ranch licensed the sounds of the Space Bass for use in their film scores, and The Discovery Channel filmed the Space Bass in Gaudi's Park Güell in Barcelona for one of their specials.