You can have free expression in any type of music if you want, and thus I guess you can say they are comparable...But Jazz is more qtrs on the meter, and to a degree crash on the 1 still feels right depending on the piece. Reggae is more of an upbeat feel, and crashes on the 4. This clip had many traditional reggae rythms/patterns. I didn't really sense any real freedom...as I perceive freedom to be. Having grown up around a lot of reggae/dancehall/soca/calypso, It all seems pretty standard to me.