012. Katy Perry + Nicki Minaj | Swish Swish
Let's just say 'Witness' wasn't Katy's most successful era. I really liked 'Chained To The Rhythm' and 'Bon Appetit', but the Nicki Minaj-assisted 'Swish Swish' outshines both songs. Let's just forget about the horrible video, the song is an absolute tune. Should have been a much bigger hit for her.