High Quality Content by WIKIPEDIA articles! Improv Tribal Style (ITS) belly dance is a group of dancers with tribal style bellydance traits composing choreography on the spot (i.e., improvising) through previously arranged cued moves. Solos are performed, but are generally supported in a group environment. Improv Tribal Style is a sub-group of Tribal Style bellydance. (It is also known as Tribal Group Improv, American Improv Tribal, Group Improv Tribal.)