I can play 'oh when the saints' on my gym badges in Pokemon White 2...
Basic, Insect, Bolt, Quake x3
Insect, Basic, Insect, Toxic
Insect, Toxic, Basic, Basic, Insect, Quake, Quake, Quake, Bolt
Insect, Bolt, Quake, Insect, Basic, Toxic, Basic.
Also 'twinkle, twinkle little star', but I cant be bothered with the lyrics, they're even easier then 'oh when the saints', just start with basic, quake, jet and move back towards basic and that's most of the song...