The Grammy Nominations Concert just got a big dose of hip-hop with the news that Ludacris and Lupe Fiasco will be playing live on the show. The rappers join country act Sugarland and previously announced performers Lady Gaga and Jason Aldean on the show.

Ludacris is a three-time Grammy winner who captured Best Rap Album and Best Rap Song in 2007. Given the time limitations of the nominations concert, which runs only 60 minutes, we wonder if Luda will end up performing live with Aldean, as they did at the CMT Awards, when they debuted the country-rap collaboration 'Dirt Road Anthem.'

Fiasco has scored several Grammy nominations over the years, including one win. His inclusion in the ceremony is interesting, if only because he caused a good deal of controversy earlier this year by referring to President Obama as a "terrorist." Fiasco has appeared on a number of collaborations this year with artists ranging from Skylar Grey to Trey Songz to Patrick Stump.

'The Grammy Nominations Concert Live!! – Countdown to Music’s Biggest Night' airs on Nov. 30 at 8PM ET on CBS. In addition to the performances, nominees in top categories for the 2012 Grammys will be announced during the show, which is hosted by LL Cool J once again.