Part 2
I've now given the whole set a couple of complete plays. The unreleased mixes and demos are real gems. It's a shame there are no known live recordings in existence.

Disc 2 starts out with the second unreleased version of 'Down, Down, Down', which will be most familiar to Crosby, Stills, Nash and Young fans as part of the medley of Neil Young songs called 'Country Girl' on CSN&Y's Déjà Vu album. Also on disc 2 is the demo version of Stephen Stills 'Hung Upside Down', which he apparently intended as a longer song than what finally ended up on the album Buffalo Springfield.

The weirdest track is 'Kahuna Sunset', a "surf" instrumental co-written by Stills and Young, complete with bird and wave sounds in the background, hawaiian sounding slide, heavy reverb and hypnotic tom-tom rhythms from Dewey Martin on drums.

There are various alternate song mixes and a couple of "dippy" love song demos, that, for good reason didn't make it into release, but demonstrate the songwriters' emerging styles. Disc 2 also features an interesting unreleased version of Still's 'Pretty Girl Why' and an unreleased version of Neil Young's 'Down to the Wire' featuring Mac Rebennack, aka Dr. John, on piano.

Part 3
What can I say? The set is great. Disc 3 includes several outstanding Neil Young demos, stuff that didn't come out until Young started his solo career, including 'Old Laughing Lady'. There is a Poco preview with an unreleased Buffalo Springfield version of the Richie Furay tune 'What A Day', and probably my favorite cut of the whole set, Stephen Stills demo version of 'Four Days Gone'.

Part 4
The fourth CD for the Buffalo Springfield Box Set is a remix of the band's first two albums, Buffalo Springfield and Buffalo Springfield Again. This mix is cleaner, especially on Buffalo Springfield which was badly bungled by the band's first producers Charlie Greene and Brian Stone.