William Pierce "Will" Butler (born October 6, 1982) is an American multi-instrumentalist and composer who is best known as a core member of the
indie rock band
Arcade Fire. Will plays synthesizer, bass, guitar and percussion. He is known for his spontaneity and antics during performances. He is the brother of Arcade Fire frontman
Win Butler. Butler received his first Academy Award nomination for his work on the original score of the film
Her in 2014.