It's back to the lab in the second commercial for Jay-Z's eagerly anticipated upcoming album, [article id="1709115"]Magna Carta Holy Grail.[/article]
 In the first spot, which dropped earlier this week, we saw Jigga chop it up in the studio with a bevy of major producers including Rick Rubin, Swizz Beatz, Timbaland and Pharrell Williams.

That three-minute commercial was followed on Thursday by a 30-second spot in which Jay and Tim continue grinding away on the album. "We should make, like, four more this week since we got time," Jay says to Timbaland while rapidly tapping a pen in time to one of the producer's signature manic beats. "Just, you know, I think I'm ready now, like before was just like the warm-up."

By the half-way point, Tim tells Jay, "I can set that," and twiddles some knobs on his mixing board, morphing the skittering track into one that sounds like a computer melting down. The glitchy arrangement clearly appeals to both men, who smile and shake their heads as it sputters and lurches from the speakers.

Jigga is clearly feeling it, giving out a war whoop as what sounds like a robot drowning in a pool cracks and sputters through the studio and the on-screen information reveals that the Samsung app that will distribute one million copies of Magna Carta to Galaxy users will be available starting on June 24.

Magna Carta will go on sale to the general public on July 9; Samsung users who have the app will be able to unlock it on July 4.