After Kendrick Lamar announced his upcoming album would be dropping April 14th, the project became available for pre-order on Itunes. Pitchfork reports that the songwriting credits accompanied those pre-orders, giving insight into the potential sonic scope of K.Dot's future magnum opus. A Reddit user who pre-ordered the album shared the complete credits here:

Track 1: K. Duckworth, D. Tannenbaum & Anthony Tiffith (Top Dawg)
Track 2: K. Duckworth & M. Williams II (Mike Will Made It)
Track 3: K. Duckworth, M. Spears (Sounwave), D. Natche (DJ Dahi) & Anthony Tiffith
Track 4: K. Duckworth, M. Spears, J. Blake (James Blake) & R Riera
Track 5: K. Duckworth & M. Spears
Track 6: K. Duckworth, D. Natche, M. Spears, Anthony Tiffith & T. Martin
Track 7: K. Duckworth, S. Lacy, A. Wise & Anthony Tiffith
Humble: K. Duckworth & M. Williams II
Track 9: K. Duckworth, D. Natche, M. Spears, C. Hansen, A. Sowinski, M Tavares & L. Whitty (BADBADNOTGOOD)
Track 10: K. Duckworth, Z. Pacaldo, T. Walton, M. Spears, G. Kurstin & Anthony Tiffith
Track 11: K. Duckworth, M. Williams II, D. Natche, M. Spears, Anthony Tiffith, P. Hewson, D. Evans, A. Clayton & L. Mullen (U2)
Track 12: K. Duckworth & D. Maman (The Alchemist)
Track 13: K. Duckworth, R Riera, M. Spears, D. Natche, D. Tannenbaum, Anthony Tiffith & R. LaTour (Cardo)
Track 14: K. Duckworth & P. Douthit (9th Wonder)

With production from Mike WiLL Made It, DJ Dahi, BADBADNOTGOOD, Alchemist, & 9th Wonder, the album looks to feature a solid hip-hop lineup. Track 11 features a surprising contribution from Irish band U2, who stand out as an unlikely collaborator. It's unclear whether this is a sample or an original collab, but the combination is certainly intriguing.