POS Productions

Big Slack is officially on the line with "The Wake Up Call," but this phone call isn't for everyone.

The Oklahoma City rapper's full-length album boasts impressive production and consistent beat making. But clocking in 17 tracks long, the biggest hang up of "The Wake Up Call" is its lack of lyrical diversity.

The syrup-thick "John Connor" is Slack at his best. The distorted beat and paced piano stabs mean business, but Big Slack counters the serious, arming himself with a grin, a bit of wit and a "Terminator" reference, lyrically noting his tombstone "says John Connor' that's my government name."

"I'm Hungry" is an uninteresting track highlighting Slack and guest rappers Majik Duce and McNastee (who engineered, mixed and produced much of the album) hustle for money and success. "Sayonara" is a pot-and Patron-fueled battle anthem led by Slack and McNastee. Negating naysayers is not a stretch for a rapper thematically, but Slack carries the clich