Metallica rocks. Stevie Wonder is amazing. And nobody should miss Neil Young with Crazy Horse.

That's not exactly new information, is it? In fact, fans probably already know everything they need to know about the three megaheadliners at the Outside Lands Music and Arts Festival this weekend.

Ditto for Jack White, the Foo Fighters, Norah Jones, Beck and a few of the other big-name acts on the bill.

But whom else should you make an effort to see?

That's where I come in.

I've combed the dozens of acts set to appear at the three-day festival in San Francisco's Golden Gate Park and circled the lesser-known gems on the schedule. It wasn't hard, given the tremendous depth of this year's lineup.

Of course, these picks are hardly unknown talents. Yet in an age when bands can develop a buzz almost instantaneously through many different forums (iTunes, YouTube, Twitter and Facebook and the ancient art known as word-of-mouth), there will likely be bands performing this weekend with which you are not familiar -- even if you should be.

I'm recommending five preheadliner acts per day, starting here with Neil Young Day on Aug. 10. Check back Aug. 7 for Saturday's five acts and Aug. 8 for Sunday's. These should help keep festivalgoers busy when they're not in the Outside Lamb or Taste of the Bay Area food lines.

Of Monsters and Men (5:25-6:25 p.m., Sutro Stage): This Icelandic indie-folk troupe was one of the big buzz bands back in March at the South by Southwest (SXSW) music festival in Austin, Texas. Of Monsters and Men lived up to the hype then, and it's continued to do so ever since. The group's debut, "My Head Is an Animal" (released in April in the U.S.), ranks among the year's best albums. Recommended for fans of Arcade Fire, Mumford & Sons.

Download: "Little Talks"

MSTRKRFT (7-7:50 p.m., Twin Peaks Stage): This Canadian electronica/dance-punk duo, which pronounces its name "master-craft," can be absolutely ferocious in concert. I went to one of its shows a few years back at SXSW and was swept away by the energy. The duo consists of Al-P (Alex Puodziukas) and Jesse F. Keeler (of Death From Above 1979). Recommended for fans of Daft Punk, the Bloody Beetroots, Justice (also on Friday's bill).

Download: "Heartbreaker"

Die Antwoord (5:25-6:15 p.m., Twin Peaks): In Afrikaans, Die Antwoord means "the answer," reportedly. And if you're on a quest to find something truly out of the ordinary at Outside Lands then, most definitely, this Cape Town, South Africa, band is the answer. This troupe mixes electronic dance music (EDM), hip-hop and rock in defiantly outrageous and raunchy ways.

Recommended for mature audiences with somewhat twisted senses of humor.

Download: "Enter the Ninja"

Sharon Van Etten (1:15-2:05 p.m., Sutro): This Brooklyn singer-songwriter, who possesses an absolutely haunting voice, is high on my must-see list at Outside Lands. I missed the folk/country rocker at SXSW, but I love the performance clips I've seen online. Recommended for fans of introspective, folksy singer-songwriters.

Download: "For You"

Tennis (4:40-5:20 p.m., Panhandle Stage): The Denver-based husband-and-wife duo, consisting of Alaina Moore and Patrick Riley, crafts gorgeous indie-pop tunes. There is a bright surf-pop vibe to the band's sound, which feels like it comes from California rather than Colorado. Recommended for fans of Best Coast, the Sundays.

Download: "Origins"

Follow Jim Harrington at Twitter.com/jimthecritic, Facebook.com/jim.bayareanews and blogs.mercurynews.com/aei/category/concerts.