Crosby, Stills, & Nash have added a fifth and final show to their upcoming run at New York City's Beacon Theatre -- and will close the stand with a performance of their classic 1969 self-titled debut album. The newly added show will take place on October 22nd, and wrap up CSN's 2012 tour dates. Although most of the album's legendary cuts, such as "Suite: Judy Blue Eyes," "Marrakesh Express," "Guinnevere," and "Long Time Gone," receive regular workouts on the road, the Beacon show marks the first time that CSN has performed the album in it's entirety, top-to-tail, live in concert.

Graham Nash said in a statement: "We've had an incredible time on the road this year. We can't think of a better way to honor the end of our 2012 tour, than playing our first album as the last set of our final show."

Nash told us that unlike other harmony groups, he, David Crosby, and Stephen Stills aren't locked into their respective ranges -- and at times can bounce between tenor and baritone within the same song: "No, we very often change. 'Suite: Judy Blue Eyes,' for instance, we change two or three times. In the middle section, that's Stephen on the very high part and on the other verses it's me on the high part. It depends on what the song calls for."

Although David Crosby is renown for being one of the greatest harmonists of his generation -- he says he pales in comparison to his buddy and partner: "I would like to claim that I was really the best harmony singer, but it's really actually Nash. It's Nash, yeah. It's sort of like two fighter pilots who've flown together a lot."