Production collective Quakers -- Katalyst (Ashley Anderson), Fuzzface (Geoff Barrow of Portishead & Beak>), and 7-Stu-7 (Invada Studios engineer Stuart Matthews) -- are back after eight years with this 50-track, 50-minute beat tape titled Supa K: Heavy Tremors.

Supa K, aka Katalyst, says: "They returned to the planet to find humans reaping ecological havoc. From their arsenal of secret weapons comes Heavy Tremors: a sonic assault to help bring the world back into balance. This siege of beats targets the few who systematically pillage the planet and its resources for their own benefit. Play it loud."

Supa K: Heavy Tremors is a dizzying barrage of samples and beats, all pretty much in the '90s hip hop style. The awesome artwork is by Joe Currie, and you can listen below.

Geoff Barrow calls this "Part One" while label Stones Throw says "stay tuned for more Quakers news coming very soon."

Quakers' 2012 self-titled album featured over 40 contributors, including Dead Prez, Jonwayne, Aloe Blacc, M.E.D., Guilty Simpson, and Phat Kat. You can stream that below too.

Quakers – Supa K: Heavy Tremors – tracklist
Like A Drum
Speak 2 Me
Loud Music
Lets Get It
Life’s Highway
Down Here
My People
It’s Here
I Know
The Gravy
Power Struggle
Boogie Electric
Low Gear
Oh Shit
Blow Out
Spark Em
My Man
Sleep Talker
Short Circuit
No Fakes
I Tried So Hard
Told Y’all
Think Positive
Lousy Odds
Heavy Tremor
It’s On
Ain’t Seen U Lately
First Light
Bust A Beat
The Backburn
Liberation Is Near
Supa Fine
Bad Bwoy
Hang On
A Few Dollars More
A New Day
Think I’m Finished

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