Grimmy is joined by All Time Low.
The 1975 are in the Live Lounge, plus Clara has another motivational mix for Greg!
With Greg off on his Sport Relief challenge, Ali Plumb joins Scott to chat movies.
Day four of Radio 1's Gregathlon for Sport Relief and Greg is live from BBC Sheffield.
The Hottest Record In The World comes from Kanye West.
Anthems to get your energy up, including Jack U, A$AP Rocky, Beyonce and Calvin Harris.