DJ Earworm has released another cool mash up titled: Mash Up For What. He used the singles:
DJ Snake feat. Lil John - Turn Down for What
Jason Derulo feat. 2 Chainz - Talk Dirty to Me
Pharrell Williams - HappyIggy Azalea feat. Charlie XCX - Fancy 
Ariana Grande feat. Iggy Azalea - Problem