Complex sentence: Its intended use was for the re-dedication of the world's largest pipe organ there, the Wanamaker Organ, as part of a series of concerts Rodman Wanamaker funded with Leopold Stokowski and the Philadelphia Orchestra.
Split into simpler sentences: Its intended use was for the re-dedication of the world's largest pipe organ there, the Wanamaker Organ. As part of a series of concerts Rodman Wanamaker funded with Leopold Stokowski and the Philadelphia Orchestra.