On August 24, 2013, Lupe revealed a preview of a song, titled "Crack". The song features a
guest appearance from American singer
Chris Brown. The song was first said to be the first single released from the album, but since then has not been officially released. Another song, titled "Drizzy's Law" which was intended to make the album cut, has also not officially been released. On October 14, 2013, Lupe released a standalone single, titled "
Old School Love". The song features a guest appearance from English singer-songwriter
Ed Sheeran, who contributes vocals to the song's hook. The song peaked at number 93 on the US
Billboard Hot 100. Its music video was filmed with Sheeran in Chicago, and was premiered on December 9, 2013. On May 19, 2014, Lupe released the first promotional single, titled "Mission", which tells the story of several cancer sufferers. The intro of the song features American singer-songwriter (and cancer survivor)
Charlie Wilson and other cancer survivors detailing their type of cancer and when they were diagnosed. On June 24, 2014, Lupe released the second promotional single, titled "Next to It". The song features a guest appearance from American singer
Ty Dolla Sign. The song was also produced by Ty Dolla Sign, and co-produced by Shafiq Husayn of the Los Angeles production team
Sa-Ra. On November 10, 2014, Lupe released the first official single from
Tetsuo & Youth, titled "Deliver", which features background vocals by Ty Dolla Sign. ==Critical reception==