AC/DC rocking as hard as ever

"You Shook Me All Night Long," "Thunderstruck," "Back in Black." Everyone is familiar with the work of AC/DC, considered classic rock by today's standards. It would probably surprise many to learn that the Scottish quintet is still at it. This past month, they released Stiff Upper Lip, their first collection of new material since 1995. A very loud, blues-powered album, Stiff Upper Lip is a necessity for fans.