Listen to Summertime of Our Lives (Karaoke Version) [Demonstration Version] [Originally Performed By A1] online. Summertime of Our Lives (Karaoke Version) [Demonstration Version] [Originally Performed By A1] is an English language song and is sung by Anna Gramm. Summertime of Our Lives (Karaoke Version) [Demonstration Version] [Originally Performed By A1], from the album Favorite Songs of A1 (Karaoke Version), was released in the year 2015. The duration of the song is 3:13. Download English songs online from JioSaavn.