Rock Band 3 is a 2010 music video game developed by Harmonix. The game was initially published and distributed by MTV Games and Electronic Arts, respectively, in late October 2010. Mad Catz took over both roles and re-released the title on November 23, 2011. It is the third main game and the 6th major console installment in the Rock Band series. As with the previous titles, Rock Band 3 allows players to simulate the playing of rock music and many other subgenres using special instrument controllers mimicking lead and bass guitar, keyboard, drums, and vocals. Rock Band 3 expands upon previous games by including three-part vocal harmonies — previously used in The Beatles: Rock Band and Green Day: Rock Band (up to 3 singers on a song) — plus support for MIDI-compatible keyboards, electronic drumkits, and even use of a real guitar in "Pro" mode.