Timberlake and his production team The Y's, along with Mike Elizondo, produced and co-wrote the song "Don't Let Me Down" for Leona Lewis's second studio album, "Echo", released (in the US) on November 17, 2009.
V decembru 2008 je Timberlake potrdil, da se bo pojavil in hkrati tudi produciral nekaj R&B/pop pesmi pevke Ciare v njenem prihajajočem albumu "Fantasy Ride", ki bo izšel 5. maja 2009.