Peanuts by Charles Schulz for September 26, 1955
Charlie Brown leans on the piano as Schroeder plays. Schroeder says, "Listen, Charlie Brown, I can play Chopin's 'Etude in C sharp..."(BR) (BR) He continues, "I've been practicing it every day for almost a year!"(BR) (BR) Charlie Brown offers, "I have a cousin who plays in a drum and bugle corps.."(BR) (BR) Schroeder grimaces to the reader as Charlie Brown concludes, "He says they only practice on Saturday afternoons..."(BR) (BR)
C sharp…major? I don’t know about minor, but C sharp major is the key which includes all 7 sharps.