I don't like Hummer Team musics that much but I don't think they are as bad as "shitty", considering the abundance of much worse musics in the world of bootleg games.
Super Angry Birds above has amazing quality with its music using extensive sampling, but some may prefer chip-tunish feeling that really fits with the 8-bit hardware. While I'm very impressed at this game's sound technology, I don't find it that "interesting". The guys behind this game just gave us the exact same music we are used to...