Volcano ChoirInstrumental vocals are a rare thing in music, and sometimes the lyrics do get in the way. but, not with Volcano Choir. Justin Vernon of Bon Iver and Collections of Colonies of Bees ( Jon Mueller (Drums), Chris Rosenau (Guitar), Dan Spack: (Guitar), Schoenecker (synthesizer), Thomas Wincek (Piano, Guitar). ) join forces under the banner of experimental pop, as Volcano Choir.