Imagine Dragons team with Kendrick Lamar to drop the "Radioactive" (Remix) following a massive joint performance at the 56th Annual Grammy Awards. Fans now have the opportunity to get their hands on the hulking track featuring a monstrous verse from K. Dot. Check the track below to listen to the "Radioactive" (Remix) from Imagine Dragons and Kendrick Lamar. Purchase the "Radioactive" (Remix) via iTunes. Stay tuned for more.