Tomorrow night will be a Laser-less affair for attendees of the annually anticipated music, film and interactive festival SXSW 2011, as Lupe Fiasco announces having to cancel his scheduled performance at KillersLasersPapers, originally billed alongside Cee Lo Green and Wiz Khalifa, on doctor’s orders to rest his voice.

Never fear… Lupe will be replaced by Atlantic labelmates Janelle Monae and B.o.B.

#lasers dr still has me on voice rest…won’t be @sxsw …but @janellemonae @bobatl will now be rockin’ the show with @realwizkhalifa” Lupe tweeted, before reminding those of us not sunning it up at the festival to tune in to tomorrow night at 8pm to watch XV, B.o.B, Janelle Monae and Wiz Khalifa rock the #SXSW stage… from the comfort of our own screens.