They just released a mash-up of Elton’s hits “Mona Lisa And Mad Hatters” and “Rocket Man.”
They started working on the track back in January. At the time Elton told Parade magazine, "I just did it! It's a duet. It's great, really fantastic. He sings great on it."
Check out the preview of the song below and if you're sold, you can purchase the entire track tomorrow on iTunes.