American Pop (1981) IMDb
Seen in 2018.
A Ukrainian Jew emigrates to America at the dawn of the 20th century and has three generations of offspring with some musical talent.
Rotoscope animation. It’s a little sad that Bakshi’s most coherent, perhaps least sexist work is also his most conventional in other ways. The humour is good and the integration of image and music is all it’s cracked up to be.
References here: Candyman (1992).