WATCH: Eminem Makes Surprise Appearance at SXSW

Nine years ago, 50 Cent burst into mainstream hip-hop -- with the help of co-executive producer Eminem -- on his proper debut, Get Rich or Die Tryin'.

Fast forward to Friday night (March 16), when 50 Cent revisited the successful album with an anniversary concert, 'Shady 2.0,' at SXSW. At 11 p.m. 50 Cent walked onto the stage of Austin Music Hall wearing a camouflage bulletproof vest, reminiscent of 50's persona circa '03.

About mid-show, Eminem--rumored to make an appearance from the moment the concert was announced-- indeed joined 50 on stage. Both rhymed to "Patiently Waiting" alongside each other, and later closed the show together with 50's freestyle, "Till I Collapse," "Don't Push Me" -- sans Lloyd Banks -- and Eminem's own "Crack a Bottle."

"We out of here," Eminem shouted after thanking those in attendance.

Watch the video below.

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Kanye West Gives Surprise Performance at SXSW

He did it again.

Kanye West made an unannounced appearance during South by Southwest Wednesday night at the Belmont in Austin.

At around 1:30 a.m. local time, West and rapper Big Sean joined 2 Chainz, a new signee to Def Jam, onstage, leading to dozens of flip cams springing up from the surprised audience.

The showcase also featured buzzworthy hip-hop/R&B acts like Machine Gun Kelly, Miguel and Elle Varner. Joe Budden, a member of the headlining rap group Slaughterhouse, apparently tipped fans off to West's impromptu appearance by posting on Twitter, "Just had a pretty deep talk w Kanye..... That was dope."

Watch the video here.

SXSW Adds 100 New Bands to Lineup

Best Coast, Ting Tings, The War on Drugs, Lana Del Rey and others to perform at SXSW

Now joining previously-announced artists Cloud Nothings, Against Me!, The Magnetic Fields, Talib Kweli, and Grace Potter And The Nocturnals are the likes of A$AP Rocky, Danny Brown, The Fresh And Onlys, Sharon Van Etten, and Rye Rye, to name a few.

As previously reported, Bruce Springsteen will preside as the event's keynote speaker. More bands are expected to be announced in the weeks leading up to the March 13-18 conference at the Convention Center in Austin, Texas.

The full lineup of newly announced acts:

Best Coast, M. Ward, Lana Del Rey, Of Montreal, A$AP Rocky, Danny Brown, The War On Drugs, Counting Crows, Tommy Stinson, The Wedding Present, Andrew WK, Brendan Benson, Hot Water Music, The Fresh And Onlys, Gardens And Villa, P.O.S., Anika, Gauntlet Hair, Youth Lagoon, Tennis, Mr. Muthafuckin' eXquire, Dan Deacon, Sharon Van Etten, Zola Jesus, Nicolas Jaar, The Polyphonic Spree, The Drums, Astronautalis, Bear In Heaven, Ceremony, Chairlift, Crystal Antlers, Little Boots, Deerhoof, Dragonette, Gossip, Matthew Dear, Miike Snow, SBTRKT, Oneohtrix Point Never, Thundercat, The Ting Tings, Action Bronson, The Crystal Method, The Black Angels, Blondes, Busdriver, Ezra Furman and the Harpoons, Apparat, Freelance Whales, Here We Go Magic, Free Energy, Eleanor Friedberger, Friends, Memoryhouse, Mikal Cronin, Buraka Som Sistema, Spank Rock, Corrosion of Conformity, Jimmy Cliff, Rye Rye, K'naan, YACHT, Band of Skulls, White Rabbits, Beth Jeans Houghton and The Hooves of Destiny, Supreme Dicks, Caveman, Cerebral Ballzy, Miniature Tigers, Zechs Marquise, Purity Ring, Justin Townes Earle, The Love Language, Cymbals Eat Guitars, Micachu & the Shapes, Grieves and Budo, Imogen Heap, Ingrid Michaelson, Michael Franti and Spearhead, The Henry Clay People, And So I Watch You From Afar, Fake Problems, Azari And III, Sleepy Sun, Bahamas, Japanther, The Knux, Carter Tanton, Cassettes Won't Listen, Jacuzzi Boys, CHALI 2NA, Cities Aviv, Is Tropical, Javelin, Kids These Days, Living Things, Scattered Trees, and Someone Still Loves You Boris Yeltsin.

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