Justin Timberlake, Elton John, J. Cole, Phoenix & More to Perform iHeartRadio Festival

Justin Timberlake, Muse, Phoenix and J. Cole will join Elton John and Katy Perry, among other A-list performers at this year's iHeartRadio music festival in Las Vegas. Clear Channel announced the performers Monday, which will also include Chris Brown, Bruno Mars, Maroon 5, Keith Urban, Miguel and fun. The two-day festival will be held Sept. 20-21 at MGM Grand Garden Arena, with host Ryan Seacrest.

13 Must-Follows For SXSW 2013

SXSW ever year presents a lot of excitement, a lot of hype and a lot of craziness. And it's also a big mess of confusion, if you're not careful. As the festival becomes more and more overcrowded, the party-hopping on 6th Street can be kind of stressful. Luckily, there are individuals and brands that have learned from experience and stepped up to help festival-goers.

We understand the overwhelmingness of the world's biggest music festival, and we've done our best to provide some suggestions that may make your trek across downtown Austin as fun and stress-free as possible.

Justin Timberlake, Jay-Z to Headline Wireless Festival

So maybe this is just foreshadowing what's to come? As we previously reported, Justin Timberlake and Jay-Z have allegedly been working on a multi-city tour together. The first positive sign has on Monday been confirmed as the duo will headline Wireless Festival 2013 at Queen Elizabeth Olympic Park in London, being held July 12-13. The lineup also includes Frank Ocean, Miguel, Kendrick Lamar, and much more.

SXSW Adds More Acts: Earl Sweatshirt, Chief Keef, Josh Ritter, Mykki Blanco & More

The best SXSW lineup has somehow managed to get even better. As of Saturday, more acts have been added to the event, including: Earl Sweatshirt, Chief Keef, Josh Ritter, Flying Lotus’ hip-hop side-project Captain Murphy, Billy Bragg, Hanni El Khatib, Dillon Francis, Amanda Palmer, Phosphorescent, Weekend, Mykki Blanco, Future Unlimited, Tijuana Panthers and California X.

Shop now!