The fourth studio album by the American musical duo, originally released in May 2015. Like their previous album 'Vessel' (2013), the album takes influence from various genres, including hip hop, rock, pop, reggae, and indie. Lyrically, the album incorporates themes of mental health, doubt, and religion. Features the singles 'Fairly Local', 'Tear in My Heart', 'Lane Boy', 'Stressed Out', 'Ride' and 'Heavydirtysoul'.

Track Listing:
1. Heavydirtysoul - Twenty One Pilots (3.54)
2. Stressed Out - Twenty One Pilots (3.22)
3. Ride - Twenty One Pilots (3.34)
4. Fairly Local - Twenty One Pilots (3.27)
5. Tear in My Heart - Twenty One Pilots (3.08)
6. Lane Boy - Twenty One Pilots (4.13)
7. The Judge - Twenty One Pilots (4.57)
8. Doubt - Twenty One Pilots (3.11)
9. Polarize - Twenty One Pilots (3.46)
10. We Don't Believe What's On TV - Twenty One Pilots (2.57)
11. Message Man - Twent