Glas O' Cola is an unreleased song, which was listed on a tape photographed in Paisley Park Studios following Prince's death. The tape also lists Sea Of Everything, Act Of God, and Laydown.
According to the tape listing, the tracks were recorded on 25 November 2009, at Paisley Park Studios, Chanhassen, MN, USA (although Sea Of Everything had been recorded previously, and was overdubbed this day). While the other three tracks were released on 20Ten, Glas O' Cola remains unreleased. "Glas" is likely a mis-spelling of "glass," but this may be intentional, and is left here as used on the tape listing.