Prince. The Purple One previously played successful residencies in the New York area in December and January to tremendous acclaim. Now he's brought it to Southern California. The Forum, 3900 W. Manchester Blvd., Inglewood. Saturday and various dates. $25-$205. http://www.ticketmaster.com.
Lil Wayne He may not be the first rapper to boast of wanting to literally eat his rivals, but in 2008 he was the top chef in rap's kitchen. "Tha Carter III" was practically the only good news from the business of selling CDs that year. Now after a stint in prison and a venture into rap-rock with "Rebirth," Wayne is back with a tour humbly dubbed "I'm Still Music." Honda Center, 2695 E. Katella Ave., Anaheim. 7 p.m. $73.10-$193.70. wwwticketmaster.com.
The Big 4 Festival Hot on the heels of Coachella, metal music's biggest names — Metallica, Slayer, Megadeth and Anthrax — are set to invade the Empire Polo Club for more than seven hours of head-banging mayhem. A sighting of all four acts in the same set is as rare as a snowball's chance in — well, you know where. Empire Polo Club. Avenue 51, Indio. 2 p.m. $99. thebig4festival.com.
Topanga Earth Day The bohemian enclave pays homage to Mother Earth at the 12th annual Topanga Earth Day. The emphasis is on sustainability, with a gallery of ecological artists, information on biodegradable and sustainable solutions, composting, water conservation and native plants. Additional perks include organic food and drink, live music and a free bio-diesel shuttle. Topanga Community House Fair Grounds, 1440 N. Topanga Canyon Blvd., Topanga. 10 a.m.-sunset, Saturday and Sunday. Free. http://www.topangaearthday.org.
Grilled Cheese Invitational Need another reason to hit this up? Evan George and Alex Brown, the indie-rock food writers behind the blog Hot Knives, are hosting a chef stage. It will feature demonstrations by grilled cheese guru Mark Peel as well as the wizardry of Food2's Alie Ward and Georgia Hardstark, who will shake up their "bloody bacon and cheese" cocktail. Los Angeles Center Studios, 1201 W. 5th St., L.A. 11 a.m. $15. Grilledcheeseinvitational.com.
Blessing of the Animals From feathered to furry, the animal kingdom's citizens are celebrated at the longtime Olvera Street tradition. A procession of humans and their pets will precede the ceremony, which Archbishop José H. Gomez will oversee. Additional entertainment includes an equestrian show, pony rides for kids and a petting zoo that will feature llamas, sheep, cows and other animals. El Pueblo de Los Angeles Historical Monument, 125 Paseo de la Plaza. Noon to 5 p.m. Free. (213) 625-7074.