CLEVELAND (AP) – Chuck Berry’s advice to young performers: “keep rocking, keep rocking.” After that, he says, “Be kind to your fans.” Berry is following his own advice, because he’s hinting even though he’s 86, he’s still got some new music. He told reporters at the Rock and Roll Hall of Fame in Cleveland Saturday he’s got six new songs, some written 16 years ago. He says the songs may be old but they’re the kind of songs he’s known for playing. Berry says he’ll release them as soon as he finds someone to guide him. Berry was given a tribute concert Saturday that included Ernie Isley of the Isley Brothers, Darryl “DMC” McDaniels of Run-DMC, Rick Derringer, David Johansen and Merle Haggard.