Thor started the concept Thor in 1973. He combined strength feats, props, costumes and showmanship with music: his feats included bending solid steel bars in his teeth and having solid concrete blocks smashed off his chest with a sledgehammer. Jon Thor created the "THOR T in Shield Logo" in 1973 which would become the copyright and trademark for the band. Thor toured Canada and the US throughout the 1970s and 1980s. In 1976, Thor performed on American national television with his appearance on "The Merv Griffin Show".