We all love free stuff..don't we?! Well, iHeartRadio and Clear Channel have partnered up for their free downloadable app that will allow you to stream music from more than 750 broadcast radio and digital-only stations from 150 cities with the ability to create custom stations. Not only are they providing us with continuous music, but have also put together a massive concert that includes Lady Gaga, Coldplay, Alicia Keys, Steven Tyler, The Black Eyed Peas, Kenny Chesney, Jennifer Lopez, Carrie Underwood, Jane's Addiction, Nicki Minaj, John Mayer, David Guetta, Rascal Flatts, Bruno Mars, Kelly Clarkson, Sublime with Rome and special performances from Usher and Sting, with more to be announced. The two-day event is set to take place in Las Vegas on September 23rd and 24th. Although tickets were sold out in less than 10 minutes, you are still able to stream live video footage of the concert via a mobile device, or through a computer.