Listen to When It's Sleepy Time Down South online. When It's Sleepy Time Down South is an English language song and is sung by Humphrey Lyttelton And His Band and Sidney Bechet. When It's Sleepy Time Down South, from the album Jazz Journeys Presents Trad Jazz - Humphrey Lyttelton, was released in the year 2013. The duration of the song is 2:59. Download English songs online from JioSaavn.