Meet the Music! Beethoven, Brahms, and a Banjo

The wacky private ear, Inspector Pulse, receives a banjo for a present. It comes with an instruction manual that only teaches three chords: I, IV, and V. At first, he finds this terribly limiting but he soon discovers that those SAME THREE CHORDS are very important in lots of music, from folk songs to Haydn, Mozart, Beethoven, and Brahms!