Hmmm. I'd say if you want to try some very different gameplay, one of the "special" tribes. Cymanti or Polaris can be quite fun. Aquarion used to be fairly weak but they're a lot better following the update, elyrion was actually pretty weakened by the update but devs know this and are working on ways to make them a bit stronger.

If you just want good music, I like Yaddak and ai mo. Quetzali are fun as well. Lux is versatile but they're more expensive than any other tribe just as a joke about their in game culture lol so buy them late imo. Wouldn't recommend vengir till later also, swords are cool but can be hard to play since their econ takes time to develop.