In September 2011, Big Sean confirmed in an interview with the Daily Tribune that he'll be working on his second album during the I Am Finally Famous Tour and plans to release the album sometime in 2012. On October 19, 2011, Kanye West announced on his Twitter plans for a Spring 2012 GOOD Music album release. On April 6, 2012, "Mercy", the lead single from the GOOD Music compilation album, Cruel Summer, was released. The song, produced by newly signed in-house producer Lifted, features Big Sean along with Kanye West, Pusha T and southern rapper 2 Chainz. Big Sean then announced his fourth mixtape would be titled "Detroit" and would serve as a lead-in to his second studio album. He then began promoting the mixtape, releasing short versions of the songs on his YouTube page. On September 5, 2012, Big Sean released the mixtape Detroit which features guest appearances from fellow rappers J. Cole, Juicy J, King Chip, French Montana, Royce da 5'9", Kendrick Lamar and Tyga.