thanks for all the responses! i shall listen.
to answer some questions: the genre isn't necessarily specific. i think anything bouncey and fun will work, not necessarily really hyped up, but not a lull either. the original PDA games music on alien hominid worked really well - it went for 200 levels and nobody complained.
i don't want to limit it with restrictions. if it is a good fit, it's a good fit. thanks everyone for all the energy!