It was released on Friday the 13th, 1970. And it would be the harbinger of a new, heavier form of rock music. A new band named Black Sabbath recorded their debut album in less than 12 hours. But its influence would be eternal.

Randy Renaud celebrates the 55th anniversary of Black Sabbath's debut album on the Chronicles of Rock.

It was the album that proved that Genesis could indeed survive and even thrive without their former frontman, Peter Gabriel. And like a Victorian toy box, it was filled with fanciful characters and enchanted tales. For its 49th anniversary, Randy Renaud revisits the story behind Trick of the Tail by Genesis on the Chronicles of Rock.

On a blustery January day in 1969, pedestrians, shopkeepers and office workers along London's Saville Row were stunned to discover that, for their lunch-break, they were being treated to an unannounced concert by the world's most famous band. For the first time in 3 years, the Beatles were performing live. But not on a stage, nor even on the street. They were high on top of a rooftop, performing brand new songs. Until, that is, the police arrived to shut them down.

Randy Renaud has the story behind the Beatles legendary rooftop concert on the Chronicles of Rock.