Steve Reich's latest album, WTC 9/11, is out on Nonesuch Records next Tuesday, September 20. What’s more, the composer’s 75th birthday follows less than two weeks later, on October 3, and the celebrations abound. The composer, who is currently in Kraków, Poland, for the week-long Sacrum Profanum festival showcasing his music, is the subject of a special feature on iTunes titled The World of Steve Reich. The program is the latest in the larger “World of” series on iTunes, which explores every facet of an iconic musician’s career—their roots, their catalog, and the other artists they have influenced. To coincide with the launch of the series, Steve Reich’s catalog is now on sale in the iTunes Store, where the new album is also available to pre-order.