If it’s a sonic party you seek, look no further than Brooklyn party purveyor and producer Sammy Bananas — and the instrumental tone of “Boca Grande,” in which he unleashes a fervent unrelenting groove and sexy sax.The one-time busker refined his saxophone chops on the streets of Mass Ave. in Cambridge, and named every song on his Massave EP for a business that once stood there. Open wide for “Boca Grande,” named after a burrito joint.