After nearly 50 years Stephen Stills is ready to Carry On with a career spanning box set.

Stephen has released more than 250 songs since 1966, some solo, others with bands including Buffalo Springfield, Manassas and with David Crosby, Graham Nash and Neil Young.

The new four CD set, Carry On, covers his career with 82 tracks, 25 of them previously unreleased.

The tracks are listed mostly in chronological order, and the anthology leads off with its oldest entry: Travelin', a previously unreleased recording that he made at age 17.

The newest track, recorded only a few months ago, features CSN performing Girl From The North Country, in New York City at the Beacon Theater during CSN's 2012 World Tour.

Carry On also features a number of classic songs newly remixed as well as songs with Jerry Garcia and other famous players including Herbie Hancock, Eric Clapton, Maynard Ferguson and Willie Bobo.

Carry On contains a 113 page booklet with rare photos and extensive liner notes and will be available as a 4 CD boxed set on March 26 with a digital version also available.