Transcript:
Schroeder sits at the piano playing.
He turns around grimacing.
He smiles and starts plinking his piano as Patty arrives. She says,“Playing your toy piano, eh, Schroeder? That’s a nice boy…” “I’ll leave so as not to bother you”
Alone again, he resumes pounding out complex pieces on the piano.
Original comic:



I think he was annoyed by her presence