CSN:NYC

CSN unveils an app for the iPad.

Crosby, Stills & Nash wrapped up their 2012 tour Monday night in New York by playing their self-titled 1969 debut in its entirety for the first time ever.

Until they hit the road again, they have left you with an app. The CSN app is the first subscription-based iPad app for a recording artist to be approved for sale in the Apple App Store. Developed by James Raymond, the son of David Crosby and the CSN band piano player, the app provides an overview of CSN's career with links to their website, social media sites and iTunes.

For $3.99 a month -- or $39.99 a year -- you will have access to exclusive content, updates and premium fan features. Crosby tells us that in addition to the CSN app, there will also be one for Crosby-Nash and one for himself. He says his app is where he will most likely release the new music he has been working on -- one song a month for a year or more.