Antoine Delvig & Walcus - Say What is OUT NOW! Grab your copy HERE: Stay up to date on more Spinnin' artists & music here! â–º The rave continues with Antoine Delvig and Walcus dropping this upfront floorfiller. Cool vocal effects, catchy synth chords and major stabs take things sky high, the breakdown is as heavy as you need it to be. Body moving stuff, Say What!