Listen to Our Last Summer (From 'Mamma Mia!' Original Motion Picture Soundtrack) online. Our Last Summer (From 'Mamma Mia!' Original Motion Picture Soundtrack) is an English language song and is sung by Colin Firth, Pierce Brosnan, Stellan Skarsgard, Amanda Seyfried and Meryl Streep. Our Last Summer (From 'Mamma Mia!' Original Motion Picture Soundtrack), from the album Mamma Mia! The Movie Soundtrack, was released in the year 2008. The duration of the song is 2:57. Download English songs online from JioSaavn.