Crosby, Stills and Nash have continued their timeless legacy this summer with a massive tour and the 25-song live film CSN 2012. Here, the trio tenderly harmonize over Stills' 1975 cut "As I Come of Age," taken from his album Stills. The melodies of Crosby and Nash add even more grace to the already delicate track.

CSN 2012 is available now on Blu-Ray and DVD/CD, and digitally. Crosby, Stills and Nash wrap up their tour September 30th in San Diego, California, before playing four consecutive dates at New York City's Beacon Theatre starting on October 16th.