After he and Adam make a agreement to not a let girl come between them, Barry betrays Adam and lets Erica and Lainey in the band, much to anger and dismay of Adam and leading him to quit. Barry attempts multiple times to win him back, but fails. He is later kicked out of his own band by being voted out of the band by Lainey and Erica, angering Barry and dismaying him and this causes him to lose his spark for Lainey, even though she was never interested in him in the first place. He tries once again getting Adam back and he succeeds. While doing so, they plan to thwart Erica and Lainey from playing and successfully do so and create a BATTLE OF THE BANDS. Adam and Barry lose when Erica and Lainey kick them out. Murray learns how much the vow renewal means to Beverly and wakes up everyone and plays a song thanks to the two bands reconcile and merge. Beverly and Murray finally renew their vows. Also, Lainey finally catches interest in Barry and Barry rejects her. Continuity Error: While Beverly is initially inspired to renew her vows following Prince Charles and Lady Di's impending nuptials, Adam is seen wearing a "This is Spinal Tap" tee, which did not premiere until 1984, 4 years after the Royal wedding.