Ozzy Osbourne's ongoing tour is practically a greatest-hits show. Last year, the original Black Sabbath singer ditched long-time guitarist Zakk Wylde, claiming the axe man's prolific solo output sounded too much like Osbourne's newer material. Wylde's replacement is Gus G., a Greek wunderkind whose résumé includes melodic metalers Firewind. G. proved a wise draft pick on Osbourne's newly expanded Scream LP, which spans from the uncharacteristically heavy "Latimer's Mercy" to the burgeoning sports-event anthem "Let Me Hear You Scream." The epic Osbourne live set concentrates on solo classics such as "Mr. Crowley," "Crazy Train" and "Mama, I'm Coming Home." But the Prince of Darkness is revisiting plenty of Sabbath material: "Paranoid" is a mainstay, and fan favorites including "N.I.B." and "Into the Void" rotate nightly.