Mark Rubin has posted some videos showing early rehearsals of the Klezmer and Roma bands involved in the "Other Europeans" project sponsored by the Yiddish Summer Weimar, the Jewish Culture Festival in Krakow and the KlezMORE Festival in Vienna. (And which I wrote about in my most recent Ruthless Cosmopolitan column.)
Mark plays tuba and bass in the Yiddish band. The videos shed fascinating light on the creative process as the two bands prepare similar but different/different but similar performance repertoire based on mainly Moldovan sources.
I'm posting a couple of them below, but you can access them all through Mark's youtube channel (click link above). He has also posted various other clips from Yiddish Summer Weimar.