In 2005, Big Boi released a mixtape/compilation album, Got Purp? Vol 2, in conjunction with the Purple Ribbon All-Stars on November 22 through Purple Ribbon Records; Aquemeni Records had become defunct after Benjamin left the company. The first single from the album was “Kryptonite”, which reached 35 on the Billboard Hot 100. Patton was also featured on the song “International Players Anthem (I Choose You)”, the first single from UGK’s album Underground Kingz.
In 2007, after the sixth album under the Outkast name, Idlewild, Big Boi announced plans to release a full-fledged solo album. While he had released a previous solo album in Speakerboxxx, it still was technically under the Outkast name. The album was to be titled Sir Lucious Left Foot: The Son of Chico Dusty. The album’s first promotional single, “Royal Flush”, was released in 2007, and featured Raekwon and André 3000. Over the next few years the album saw many delays, but multiple promotional and video singles were released such as “Shine Blockas” featuring Gucci Mane, “For Yo Sorrows” featuring George Clinton and Too Short and “General Patton” featuring Big Rube. The first official single was “Shutterbugg” featuring Cutty and the second “Follow Us” featuring Vonnegutt. The album was released internationally on July 5. Guest artists include alternative urban songstress Janelle Monáe; Big Boi’s own new group Vonnegutt; plus established rappers T.I. and B.o.B. Sir Lucious Left Foot: The Son of Chico Dusty received general acclaim from most music critics, earning praise for its inventive sound, varied musical style, and Big Boi’s lyricism.