The beach city of Mazatlán, in the Mexican state of Sinaloa, has long been associated with music — and it is successfully pushing back against noise complaints looking to silence it.

Renowned as “the birthplace of banda,” local bands in Mazatlán graze the beaches with boisterous sounds of tubas, trombones and snare drums. This music is called banda, a subgenre of regional Mexican music whose ensemble features brass and percussion instruments.

Lately the resort city on the Pacific…