@CraigatCoF Am I crazy or did I hear A Forest being played on a Player Piano during Westworld tonight?— steve clark (@spcdesigns) October 24, 2016
@CraigatCoF There was a great piano version of A Forest in this weeks episode of Westworld.— Ian Halperin (@IanHalpyHalp) October 24, 2016
Watch the scene here (updated to a better version).
Update (Dec. 11th, 2016): Full soundtrack is now available - Amazon / iTunes. Thanks, Josh.