For me it's Irish traditional music. Aside from having an interesting history, the style often takes a very high level of musicianship to play well. A single monophonic instrument can play a tune and the fast-moving stream of notes can simultaneously spell out melody, counterpoint/call-and-response, and harmony, as well as providing a strong rhythmic pulse (it is music to dance to, after all).
For me it's Irish traditional music. Aside from having an interesting history, the style often takes a very high level of musicianship to play well. A single monophonic instrument can play a tune and the fast-moving stream of notes can simultaneously spell out melody, counterpoint/call-and-response, and harmony, as well as providing a strong rhythmic pulse (it is music to dance to, after all).