GoatmanMusic: “Crazy” - Gnarls Barkley (Avi Kaplan Version) A slow solo cover for a rainy day. #crazy #gnarlsbarkley #crazygnarlsbarkley #kaplancover #avi #avikaplan #avikaplancover #bass #basscover #solo #solovoice #acapella #acapellacover #basssinger #solocover #soloist #cover #kaplan #acapellaapp #acapellaappstore