So, going track by track here...
Racing '78 - commonly bootlegged alternate take, this is a fantastic version of one of my favorite Springsteen songs, although I think he made the right choice as to which version to use for Darkness
Get That Feeling - the new vocals aren't bad, but they were unnecessary. The original, unreleased version was just fine as is, and the background vocals are overdone here.
Outside Looking In - man, this sounds fantastic in released quality. Awesomeness.
Someday (We'll Be Together) - previously unknown song; certainly sounds new to me, but I have no proof if this was totally re-recorded or if the music was indeed from '78, but all the vocals, background vocals, and horns are new. Better than most of WOAD, that's for sure.
One Way Street - I don't mind the new vocals here, but again, the original unreleased one was just fine
Because The Night - the '78 demo was never finished before he gave it to Patti Smith, so it was either finish it or don't do anything. I think the vocals are pretty good here, and while the live versions blow it away, it's kind of what i was expecting for a studio verison. Short and simple.
Wrong Side Of The Street - 2010 vocals with 1978 music, or so I think. Sounds pretty good.
The Brokenhearted - good song, but kind of weird that it's all original vocals until the end, and then fades out with 2010 vocals
Rendezvous - this is the one song where I'm not fully convinced it's original vocals, but it sounds like it to me. Either way, it sounds great. Always loved this song.
Candy's Boy - the well-known alternate to Candy's Room. Almost the same lyrics, but a totally different melody. Awesome in its own right, with one of Danny Federici's best organ solos. Glad to see it released.
Save My Love - no thanks. Sounds like a WOAD outtake.
Ain't Good Enough For You - one of the highlights of the entire set; similar in vein to So Young And In Love from the same sessions (found on Tracks). Just amazing that he was kicking out these upbeat songs for an album like Darkness.
Fire - definitely the original 1978 music with a new vocal. Sounds fantastic - his voice came out great on this.
Spanish Eyes - another song with the 1978 music where I think his new vocal is better than the original, although I was never a big fan of the song itself. Nice to have though.
It's A Shame - this sounds like a song that he would've given away to Gary U.S. Bonds back in the day. With no bootlegged version to compare with, I don't know how much is new besides the vocals. Not a favorite of mine.
Come On (Let's Go Tonight) - often bootlegged alternate version of Factory. The violin sounds great.
Talk To Me - another highlight. I know it didn't fit in thematically on Darkness, but he never should have given this one away to Southside Johnny. Just a fantastic cut.
The Little Things (My Baby Does) - Save My Love, Pt. 2. It's not terrible, per se, but it's not something I'm going to listen to a lot.
Breakaway - by far the best of all the songs with new vocals. His voice is excellent here, and the song itself is incredible.
The Promise - the well-known outtake. I prefer it to the '98 solo version, although there's a different outtake that I think is superior.
City Of Night - the previously bootlegged outtake known as Taxi Cab. Sounds pretty much the same. Kind of a strange song for him, but I dig it.
The Way - hidden bonus track. One of my all-time unreleased faves. Don't know why it's only a bonus, but I'll take it.