A really beautiful Muwashshah in 13-beat rhythm. I don't love this performance, but I wanted to include the song (I reference it in the paper), and couldn't find a better one--it's not a tremendously well-known piece, and the Al-Kindi ensemble at least has the merit of performing lesser-known repertory.
See the following analyses:
Jins Hijazkar,
Jins Nahawand & Nakriz,
Jins Rast,
Jins Kurd