(AllHipHop News) Toronto’s Marco Polo is back with another album entitled The Stupendous Adventures of Marco Polo, a collection of unreleased and rare tracks. The producer has logged a back catalog of unreleased material since his first release in 2003, titled Pumpkinhead’s Orange Moon Over Brooklyn.The unheard works will now be available in stores via Duck Down Records, on June 29th. Guests featured on Marco Polo’s new project include Large Professor, Skoob of Das EFX, Grand Daddy IU, Royce da 5’9,” Elzhi, Torae, Skyzoo, Ruste Juxx, and Diamond District. The album also features MC’s like Red Clay, Shylow, Saga, Promise, Surreal, D-Story, Bad Seed and Arcee who Marco Polo has worked closely with, while residing in Brooklyn. “My crew and I, which includes Shylow and DJ Linx, put a lot of work into this music and just because something is older and has never been released doesn’t mean it’s scrap — we put a lot of work into it and we want people to hear it,” explained Marco Polo.Many of the songs are tracks that are being released for the first time and have never made it to iTunes or a CD. “I want people to know that when they see my name attached to something, they’re getting quality and consistency. This album is for the hardcore Marco Polo fans out there that just wanna have something to rock while I’m working on Port Authority 2. I’m locking myself in the lab on some caveman status for that one.”Below is a tracklisting for The Stupendous Adventures of Marco Polo:D-Stroy & Bad Seed – Buggin OutLarge Professor – The Radar RemixPromise – The BridgeRed Clay – OfficialRuste Juxx – Bomb Sh*tShylow – Whylin OutSaga – Think of You NowTorae – Combat DrillsDJ K.O. – Best To Do It ft Royce Da 5’9,” Elzhi & Supastition (Marco Polo Remix)Skyzoo – Block Sh*tDiamond District – Who I Be (Marco Polo Remix)Skoob of Das Efx – How I Get Down (Marco Polo Remix)Surreal – So BasicGrand Daddy I.U. – The VeteranArcee – AmbitionExile – Radio ft Ruste Juxx & Torae (Marco Polo Remix)