Remember the episode when Opie decided to clean out the garage so his rock and roll band could find a place to rehearse? Andy thought a good name for the band would be "The Young Swingers" (Opie's response: "Uh....yeah.....thanks, paw...."), and they wound up being called "The Sound Committee" (great 1967 name).
So, with all that in mind....
Keith would hook up with Clifford, the "bad boy" guitarist in the band who Aunt Bee worried about Opie's association with, and would begin teaching him all about guitar and what it means to party 24/7.
The new band that would ensue would feature Andy with the classic ode to Barney:
"Oh my Barney Oh my Barney Had a key but couldn't lock it Had one bullet for his pistol and he kept it in his pocket!
"B" side would be Earnet T. Bass's classic rap "Jump in the fire, fire too hot, jump in the pot, pot to shallow, jump in the hallow......."