I like ambition in a track, especially when it's a début single. Gentle Mystics somehow manage to make a journey in Spiralling Breeze from Tango to slow Ska, with a few other styles thrown in along the way. Definitely a different sound and at over 6 minutes long they're not afraid to explore it, which I guess shows the benefit of being able to fully utilise a 9 piece band.
Given that they list as many genres as members on their facebook page when Gentle Mystics release they're album later this year I suspect it may be a spotters guide to musical styles. If they interweave them as successfully as they have on Spiralling Breeze it should be fun.