Record Store Day Release. The Mushroom Tapes - The Flaming Lips. Record Store Day Black Friday Release 2018. Format: LP. These legendary tracks were the demos recorded for the Priest Driven Ambulance album, with the classic band line-up featuring Jonathan Donahue from Mercury Rev on guitar. Originally recorded by Donahue and remastered by Dave Fridmann and the Flaming Lips, they give a great insight into the creative process of the band. This is the first time The Mushroom Tapes will have been available as a stand-alone release and first ever time these tracks have been available on vinyl.