From the perspective of Dwayne Dopsie, accommodating zydeco’s danceable rhythms is no reason to forgo the music’s improvisational, genre-meshing joie de vivre.

If anyone knows what genuine zydeco is, it’s Dopsie. The Lafayette-based, Grammy-nominated son of the late zydeco pioneer Rockin’ Dopsie and younger brother of Rockin’ Dopsie Jr., he’s released 11 albums and led his band, the Zydeco Hellraisers, since 1999...