Listen to I Guess That's Why They Call It the Blues online. I Guess That's Why They Call It the Blues is an English language song and is sung by Love Songs, The Love Allstars and Love Songs Music. I Guess That's Why They Call It the Blues, from the album Perfect Love Songs, was released in the year 2015. The duration of the song is 4:50. Download English songs online from JioSaavn.