Musical hilarity 150516

A selection of musical links:

• In the Key of Comedy - Classical with gymnastics
• Because fours always come in threes:
• The Axis of Awesome - Four Chord Song. 38m views - you've seen this before
• Four Quarters: Pachelbel á capella
• 4 Cellos do Pachelbel too
• Tim Minchin - Not Perfect.
• Garfunkel and Oates: Self-esteem, not low enough . . . yet.
• The version of Boccherini's Master & Commander with the weirdest hats.