The "mavericks" of American are numerous, but Cowell and Harrison loom large. Varese, however, French before he became American, is too sophisticated and historically significant for this rubric. While Cowell's distinguishing mark is tone clusters, his striking Synchrony begins with the textural exact opposite, a three-minute trumpet monody. Plenty of clusters in his Piano Concerto - fairly hurled at one in this atmospheric live recording. Harrison's Concerto for Organ with Percussion Orchestra is a variously meditative and rumbustious East-meets-West affair.