The CDQ – although perhaps unmastered – version of Mos Def’s lost collaborative track with Kanye surfaces.

This track originally dropped in 2010, and has been remastered and re-released at digital retailers this week.

This track is a part of Funky Man: The Prequel 2LP release dropping in April on Slice-Of-Spice. The Funky Man “Prequel” material has been waiting 22 years to be properly mastered and put together in one solid release project. Check out the track and snippets from the entire project below.

Yeah, they were never going to clear that CCR sample. Prince Paul writes: This was a song was recorded in My studio in the early 2000′s .Doom I had know for quite some time and at this point I had recorded Barman ” It very stimulating ‘ EP . Barman wanted to collaborate with Doom [cont.]

Promo Only Flexi-Disc given out for free to customers who purchase ‘Double Packs’ of the 3rd in the Lord Finesse Signature Sevens Series. Check for the alternate intro and slightly different lyrics from KRS-One who re-recorded his vocals for this now legendary track.

“What’s Wrong,” was initially produced and recorded for Rakim’s “Seventh Seal” (2009) LP, but due to clearance issues was nixed from the retail release of the project. It has since sat dormant until Rakim gave the track back to Marco and he decided to use it for his forthcoming free-LP “Newport Authority 2” as Marco [cont.]

Joey Bada$$ releases this lost freestyle over Mos Def’s “Umi Says” instrumental, which he recorded two years ago, under the alias JayOhVee. This comes from an unreleased mixtape called New Kid On The Block, which he may or may not release.

WOW! Junkie XL tells us: “Back in 2002, after the Elvis remix was released, the amount of artists that were thrown at me to remix, was staggering. LL Cool J’s classic was also thrown into the Computer Hell Cabin with a remix request. I knew back then that I should not touch this classic, but [cont.]

Rakim’s 1995 track sees an alternate version, produced by Dominic Owen.

J. Cole releases this 2008 track in honor of “the end of the world”. Considering we’re still here, we wonder if Cole is having regrets today….

We prank called our friends at Turntable Lab back in 2005. Here is the end result.

While Tyler The Creator’s sophomore album, WOLF, is supposed to drop in November, we’ve heard little in the way of it’s official release; no single, no video, no press release, nothing. This little track leaked out over the weekend, however is an older song that was scrapped from the GOBLIN sessions, then meant for WOLF, [cont.]

So, the story behind this unreleased 2008 track is Nicki Minaj was getting impatient during Young Money Records’ courting process, so she wrote a “Stan”-esque song to Lil’ Wayne, complete with suicidal, gunshot sound-effect ending.

Lupe releases this alternate, unfinished version of “American Terrorist Pt. 2″. His new album, Food & Liquor 2, hits Sept. 25th.

“What you have right here is the start of a song created during the making of the Funky Technician LP, that was never finished. Lyrically, it was actually parts of a live routine that I was trying to convert into a song for the album. DJ Premier found the loop and started putting the track [cont.]

Here is a unreleased song by Rampage feat Busta Rhymes from Tha Red Oktoba album, that for awhile had become urban legend because it was never released. The album does exist and this is a glimpse of what it sounded like.

Found by legendary crate-digger DJ JS1, this track has been sought after since it was recorded in 1993. Recorded for the Who’s the Man soundtrack (as seen in the footage from the Onyx DVD), Biggie’s song ended up being his first single “Party and Bullshit”. Huge thanks to DJ JS1 who was nice enough to [cont.]

With all this talk about Marley’s recent Ableton video, showing how he created LL’s classic “Mama Said Knock You Out”, I figured I’d dig up that old Def Jam white label promo of Marley Marl’s remix of “Mama Said Knock You Out”. As far as I know, this was the only place it was released [cont.]

Here’s another lost Stack Bundles / K. West collabo. This one appears on the Pros and Cons DVD/CD, which features more lost tracks from the fallen rapper.

Here’s a snippet of a little something that I was working on. Played this out a few times and it’s crackin!!… Full version might never see the light of day so if you see me playing out then make a request