MARC BROUSSARD Second generation Louisiana music man Broussard informs his chops with the unmistakable blues that call the bayou home. Gathering the rich musicality of southern Louisiana — Cajun, Crescent City funk and jazz, horns-caressed R&B — Broussard writes and croons radio-friendly rockers, some of which are destined to become classics. This is date-night music that’s sure to heat up a chilly Saturday night. RIYL: John Hiatt, Dr. John. With Sugar & the Hi Lows. $20. Neighborhood Theatre.