Ryan Tedder moves to the guest artist spot when unknown songwriters pitch original material to OneRepublic, while Jason Evigan joins Ester Dean and Shane McAnally to help adapt the songs.

Undiscovered songwriters pitch original material to Charlie Puth, and three of the most sought-after writer-producers in music produce the songwriters to adapt their songs to fit Puth's style.

Undiscovered songwriters pitch original material to Leona Lewis and a panel of top music producers, who work to adapt the songs; Leona Lewis chooses one song to record and release.

Undiscovered songwriters pitch original material to Old Dominion, who are looking for original material to be featured in an upcoming Jeep commercial; Old Dominion chooses one song to record.

Undiscovered songwriters pitch original material to Old Dominion, who are looking for original material to be featured in an upcoming Jeep commercial; Old Dominion chooses one song to record.

Undiscovered songwriters pitch original material to Macklemore and a panel of top music producers, who work to adapt the songs; Macklemore chooses one song to record and release.