The pairing of P. Diddy (corporate rap’s super-svengali) with 8 Ball & MJG (pioneers of street-bred Southern hip-hop) is dubious to say the least, but could any other partnership have produced the bombastic majesty that is “Cruzin’”? The song merges all of Diddy’s larger-than-life tendencies (including a cheesy hook sung by Slim of 112) with 8 Ball & MJG’s muscular, masterful brand of Memphis hip-hop, thereby transforming the standard Southern cruising song into a dazzling radio anthem of epic proportions. The legendary Memphis duo completely own Ridin’ High — even the radio-friendly concessions (“Pimpin’ Don’t Fail Me Now,” “Take It Off”) seem like a means to slip the group’s seriously rugged, heartfelt hood rap into the hands of the public. “Relax & Take Notes,” “30 Rocks,” and “Get Low” are Southern rap boulders, sure to satisfy fans who have thrived on the duo’s brand of formidable street rap for all of 15 years. While Diddy can hopefully bring the sound of these Memphis heroes to the huge audience they deserve, Ridin’ High is proof that 8 Ball & MJG won’t be changing their time-tested technique for anyone.