Gregorian: Pure Chants in Concert TV special premieres start this weekend on U.S. Public Television! Please watch and support your local station during the March Membership Campaign to find out how you can receive the best seat pre-sale tickets for the U.S. Gregorian Pure Chants tour, the exclusive program DVD and the exclusive Pure Chants 2 CD set. Watch on WFYI Indianapolis, KCPT Kansas City, MPT Maryland, WMVS Milwaukee, NPT Nashville, KLRN San Antonio, TPT Twin Cities Public Television, NPT