For the past few years, due to copyright laws, The Beach Boys have released a few digital-only releases featuring rarities, unreleased material, and other recordings that had not heretofore been officially released, all of which are fifty years old in that particular year.
This show was part of the band's promotion tour of the album Pet Sounds in 1966; during that time Brian Wilson was working on the then-upcoming/unreleased album Smile.
On the night before, Brian flew out from LA to assist the band in rehearsing "Good Vibrations", which hadn't been played live before the 3 shows in Michigan. The album marks the 2nd and 3rd time the song was ever played live by the Beach Boys. As a result, the band taunts him out onto the stage for the second set's encore to play bass and provide vocals for Chuck Berry's "Johnny B. Goode".