Billy Joel - This Night's chorus is actually Beethoven's Piano Sonata No. 8 in c minor, Op. 13, II.
Banya - Beethoven Virus is based off Beethoven's Piano Sonata No. 8 in c minor, Op. 13, III!
So basically, This Night is a major version of the minor-key Beethoven Virus. Heh.
And of course we've also been listening to Bach's Invention #13 in a minor, BWV 784... otherwise known as TAKA respect for J.S.B. - No.13
...and soon we'll be studying Vivaldi's Concerto No. 4 in f minor, RV 297, "WINTER"... otherwise known, of course, as TAKA - V.