Amazon.com Rock Band 3 Wireless Fender Mustang PRO-Guitar Controller for $82.30 with free shipping. All-new Wireless Fender Mustang PRO-Guitar Controller for Rock Band 3. Plays Rock Band 3 Guitar and Bass parts / Play real chords and melodies with new Rock Band Pro mode. 17-fret touch-sensitive neck with 6 buttons per fret provides 102 active finger positions / 6 low-latency strings for authentic note strumming.