Although previous collaborations between the groups have been sparse, Flatbush Zombies and The Underachievers have always seemed to be on the same wavelength. Both more LSD-friendly and zooted than Pro Era, the only other big group in theÂ Beast Coast movement, the BK groups have now linked up under a new moniker: Clockwork Indigo.

Also the name of their upcoming joint tour, Clockwork Indigo finds all five members spitting on "Butterfly Effect," a seven minute epic produced by Eric Arc Elliot. A grimy, slow-paced all-out rapfest, the track shares its name with aÂ 2004 Ashton Kutcher movieÂ and an effect in chaos theory that WikipediaÂ says is the "sensitive dependency on initial conditions in which a small change at one place in a deterministic nonlinear system can result in large differences in a later state," whatever that means.

Y'all dig this supergroup?

Quotable Lyrics:

How can a nigga do his homework when his mom's on crack?

How can I produce a record that'd be equal to that

Every time I play some new shit, I'm just stickin' to swag

My motivation to the youth is how we bringin' it back