SpongeBob SquarePants S08 E11 Sweet and Sour Squid

"Be there and be square!"

Plankton tries to befriend Squidward in order to get the Krabby Patty secret formula. However, Squidward refuses to discourse with him until SpongeBob tells Plankton that he must compliment Squidward's music in order to strike up a friendship. The two become friends and share their music to all of Bikini Bottom.