Sunny Side Up is the second studio album by Scottish singer and songwriter Paolo Nutini, released on 29 May 2009 in Ireland and 1 June 2009 in the United Kingdom. Nutini and his band, the Vipers, embarked on a brief tour of the United States before a UK tour leading up to the album's release. The album debuted at number one on the UK Albums Chart. Nutini self-recorded the album with his band the Vipers, while Ethan Johns contributed to the mixing and production. Notably, the album includes guest appearances from trombonist Rico Rodriguez and Questlove.

Caustic Love is the third studio album by Scottish singer-songwriter Paolo Nutini, released on 14 April 2014 by Atlantic Records. After releasing his critically and commercially successful album Sunny Side Up (2009), Nutini toured for two years. In February 2011, Nutini began writing and recording the album Caustic Love, which he co-produced with Dani Castelar.