Minneapolis Morgan Thorson, a rising force on the national contemporary dance scene, has been collaborating for months with Lows Alan Sparhawk and Mimi Parker on Heaven, a Walker commission that premieres March 46. Local musician and Making Music host, musician/composer James Everest talks to the artists about their work and ways that this new piece breaks both choreographic and musical conventions. Copresented with mnartists.org and the Whole Music Club at the University of Minnesota.