B is for Brazil, Bang, bikes, boutiques, and bargains. And one more: Be there.

HEAR
Bang Music Festival
What: Duran Duran, Daft Punk, Gnarls Barkley, Modest Mouse, and lots more rock your socks off.
Why: You’ve been hungry like the wolf for a lineup like this.
When: Sat., 11 a.m.-midnight.
Where: Bicentennial Park, 1075 Biscayne Blvd. (866-432-2264).

Marisa Monte
What: The Brazilian pop songstress sambas into town courtesy of The Rhythm Foundation.
Why: It’s todo legal.
When: Fri. & Sat., 8 p.m.
Where: Gusman Theater, 174 E. Flagler St., Downtown (305-372-0925).

DO
Critical Mass Bike Ride
What: Coast around picturesque Coral Gables with Emerge Miami to promote alternative transportation.
Why: You’re a road warrior.
When: Sat., 10 a.m.
Where: University Metro-Rail Station, 5400 Ponce de Leon Blvd. (305-579-0069).

SEE
Aura Fashion Show
What: The trend-savvy Gables boutique celebrates its fourth anniversary with a peek at new holiday goods.
Why: Only Frasier firs can wear tree skirts.
When: Fri., 11 p.m.
Where: Social Miami at Sagamore, 1671 Collins Ave., Miami Beach. R.S.V.P. to 305-438-9200.

BUY
M.A.C. and MBCC Women’s Business Council Shopping Benefit
What: A $10 donation (for M.A.C. AIDS fund) and a business accessory (for Suited for Success) get you discounts at Leo and Ralph Lauren, plus champagne, chocolate, and mini makeovers.
Why: It’s better to give and receive.
When: Thurs., 6-9 p.m.
Where: M.A.C., 650 Collins Ave., Miami Beach. R.S.V.P. to 305-695-6834.