Cee Lo Green has quit as Rihanna's opening act on her Loud tour over fears his busy schedule will affect his performances.
The former Gnarls Barkley star has been supporting the Umbrella hitmaker on her concert dates while also juggling his commitments on U.S. reality TV show The Voice as well as work on his new album and book.
The singer has now conceded he is working too hard and has decided to leave Rihanna's tour.
A spokesperson for the Forget You star tells Gossip Cop, "He always puts 100 per cent into his work. With the requirements and time commitment to The Voice, on top of heading back into the recording studio and an upcoming book, he feels that he wouldn't give his fans the show that they deserve."