Doctor Brian Cherwick leads Newfoundland’s finest Ukrainian folk band. Okay, … he leads Newfoundland’s only Ukrainian folk band. The Kubasonics combine chants from centuries past, Ukrainian love songs, and a touch of punk and rock ... from the Rock. This week, Nasha Kasha introduces a band leader, who earned his PhD in polka, and music that could only have been inspired by a kubasa (koo-bah-sah).