Artist Biography Available in: Keith Kenniff is an American composer, multi-instrumentalist, and electronic music producer. He composes ambient/electronic music under the moniker Helios and post-classical piano music under Goldmund. He is also one-half of the indie band Mint Julep, and ambient project "Hollie & Keith Kenniff". Keith is also a composer for film, television, dance and performance art. In 2010 he began the record label Unseen.