AUSTIN -- Jared Leto was not only busy promoting his 30 Seconds To Mars doc "Artifact" at SXSW, but he was also getting ready to push his rock act's new song.

Leto shot the music video for "Up in the Air," the band's forthcoming new single, and was editing the clip during his visit to Austin for the film fest. In less than a day, the song will be revealed, and overall, "It's very different, it's a complete departure," the actor/musician told me on the red carpet to "Artifact."

The band last released their album "This Is War" in 2009, after warring with their label Virgin; "Artifact" is a making-of chronicle of that set and the industry conflict behind it.

Check out what else Leto had to say about the space-bound track, and what's up with the winter coat in an central Texas spring.