Here's a fun fact for you. According to Rolling Stone, "Always Look On The Bright Side Of Life" is the most popular song to play at funerals in the UK. Yes, the song from the 1979 Monty Python film beats out more traditional songs and every single hymn.
I suppose we shouldn't judge someone's final request. Heck, I'd want that song played at my funeral, too. Lyrics like "you come from nothing, you go back to nothing, what have you lost ? Nothing!" really puts things in perspective and might just cheer up the crowd.
Or maybe it won't. I don't know. I always have the wrong reaction to things.
Still, I think there are certain songs are no one would want you to play. And I'm sure pretty sure Twitter lined them up nicely in the surprisingly popular "Worst Songs To Play At A Funeral" hashtag trend, as seen excerpted below.