TOPxMM is an extended play (EP) released by Twenty One Pilots on December 19, 2016. It was a collaboration with the band MUTEMATH and was available for free until January 18th, 2017 on WeTransfer.  The EP is five tracks long, featuring remixed songs from the second label album, Blurryface, as well as the single Heathens.

Track listing

No. Title Writer(s) Length
1. Heathens [featuring MUTEMATH] Tyler Joseph 4:34
2. Heavydirtysoul [featuring MUTEMATH] Joseph 3:48
3. Ride [featuring MUTEMATH] Joseph 3:48
4. Tear In My Heart [featuring MUTEMATH] Joseph 4:00
5. Lane Boy [featuring MUTEMATH] Joseph 5:21