Masta Ace

First is a nice freestyle on the Stretch and Bobbito show. I'm not sure when it was recorded, but he's accompanied by Lord Digga, so I assume it's from the Masta Ace Incorporated era of the early-mid '90s. Ace shows off that classic on-beat/off-beat flow with some great punchlines off the top of the head.

Master Ace and Lord Digga on Stretch and Bobbito

More recently, he appeared on the 5th anniversary of the Halftime Show, along with new protege Apocalypse. Here are a couple of his turns on the mic. Early 2003.

Masta Ace on Halftime Show
Masta Ace and Apocalypse