Happy777 posted an interview in the Club Penguin Blog about the island’s music!

Q:  There’s a lot of music in Club Penguin. How do you decide what music go where?
A:  We’d like the music to support the feeling of the areas and the party themes.

Q:  What’s your favourite part of making music and sound effects?
A:  Working with music and sound effects (sfx) is creative and fun and we hope it adds another dimension to everyone’s experiences on the island.

Q:  At last year’s Music Jam Party,  I seem to remember music called “bubble pop” – is that short for bubble gum pop? Are there other kinds of candy music?
A:  With that song we were originally inspired by the Bubblegum Pop style of music. But with music this sweet, it’s all candy!