A Scientist, inspired by the Dalai Lama, is studying happiness. Pick a theme song or comment on your choice.

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Happy Heart: Andy Williams

14%

Ode To Joy: Beethoven

18%

Glad All Over: Dave Clark Five

7%

Happy Jack: the Who

7%

Cheer Up: Bob Marley

45%

You've Made Me So Very Happy: Blood, Sweat & Tears

9%