Lenny and the Squigtones appeared in a number of episodes of Laverne & Shirley.
S1E14: From Suds to Stardom
S2E10: Oh Hear the Angels Voices
S3E16: The Second (Almost) Annual Shotz Talent Show
S4E16: The Third Annual Shotz Talent Show
S5E12: The Fourth Annual Shotz Talent Show