Eminem was a "surprise guest" during 50 Cent's performance at SxSW.

+ The not-so-secret surprise guest Eminem rapped with 50 Cent, who performed Get Rich or Die Tryin' in its entirety on Friday at SXSW during the SXSW Shady 2.0 Showcase. Peep MTV News' review. (MTV News)

+ Another surprise act at SXSW was Rick Ross, who headlined the Fader Fort on Saturday night. Check out video of his entire set. (Rap-Up)

+ Nicki Minaj revealed the tracklisting to Pink Friday: Roman Reloaded, which features a bevy of guests including Rick Ross, Lil Wayne, Drake, Nas and more. (Rap-Up)

+ Rage Against the Machine's Tom Morello performed his solo material at SXSW; he was joined by MC5's Wayne Cramer for a tune before he led the crowd to Occupy SXSW, which was shut down by the cops. (Rolling Stone)

+ M.I.A. is publishing a book! Slated for release in October, the tome will feature 300 photos and unpublished testimonies. Her new album is expected this summer. (Rap-Up)

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