Progressive rock pioneers Rush announced Wednesday that a condensed version of "Headlong Flight" will be shipped to radio on April 19th.  The song is the first taste of the band's long-awaited album, "Clockwork Angels," which is scheduled to hit stores May 29th on Roadruner Records.  The album version of "Headlong Flight" is seven-and-a-half minutes long, while the radio version is five-and-a-half minutes.