From ATO's Website:
"'Teenage Gizzard' is a newly unearthed collection of some of the very first material ever recorded by King Gizzard between 2010 and 2011. It includes three early singles, two early b-sides, four tracks from the band’s first non-official EP 'Angelsea', and one previously lost track. 'Teenage Gizzard' is a glimpse into the past of one of the most prolific bands in rock history!"
