Novak Djokovic tapped into his musical muse and good humor ahead of his London title defense.
The five-time ATP World Tour Finals champion enjoys a favorable draw in the Ivan Lendl Group of round-robin play that includes Gael Monfils, Milos Raonic and Dominic Thiem.
Watch: ATP World Tour Finals Draw
Watch the world No. 2 tune up for the ATP World Tour Finals on the piano finishing with a flourish to make you smile.
Though Novak's skills on the keys aren't quite quite as sharp as his return game, he gets high marks for musical preparation.
Last May, Novak and wife Jelena treated Facebook friends to this piano recital on the Friday night before he launched his quest for his first Roland Garros title.
Photo credit: Shanghai Rolex Masters