I just realized that the song Bear of the Interest plays isn't Smile.DK, it's Aqua's "Lollipop". (To be fair, the sound quality was so terrible that I couldn't decipher the lyrics at all, and they're both Scandinavian bubblegum-dance groups, so yeah...)
(For the even more curious, the line repeated over and over and over appears to be "I wish that I were a bubble gum, chewing on me, baby, all day long.")
Edit: What caused me to realize this, incidentally? Yep, yet another bootleg toy. Specifically,
this egg-laying chicken which has the very same sound chip (of course!).