Remember "Dead Presidents II," the first single off Jay-Z's debut record Reasonable Doubt all the way back in 1996? That was a Ski Beatz track--yeah, he's been around a minute or two. After getting his start with Roc-A-Fella co-founder Dame Dash, Ski spent much of the '90s sculpting hits for the likes of Jay-Z, Camp Lo and Fat Joe and most recently took production credit for all but three tracks on Curren$y's Pilot Talk. But on his producer album, titled 24 Hour Karate School in reference to the nickname for Dash's new DD172 umbrella of artistic endeavors, Ski effortlessly connects the hip-hop of his early years with a more modern feel. New Orleans up-and-comer Curren$y makes three appearances, Brooklyn emcee Stalley two and Camp Lo, Wiz Khalifa, Jim Jones, Jay Electronica and The Cool Kids all hop on a track. It's a star-studded cast, and the instrument-driven tracks span a variety of sounds to keep their no-nonsense verses balanced. Ski Beatz might be a legendary producer, but the artists he picked to complement his new scores are able to keep up the pace.