Complex sentence: Eventually, Allison learned enough chords on the guitar to write her own music, Bill would use various thrift store keyboards, and inspired by Rilo Kiley, Hot Lava made heavy use of an Omnichord.
Split into simpler sentences: Eventually, Allison learned enough chords on the guitar to write her own music. Bill's contributions would employ various thrift store keyboards and made heavy use of an Omnichord.