ABC-TV was one of the first television networks in Australia to embrace the rock'n'roll revolution of the late 1950s, most notably with "Six O'Clock Rock", hosted by Johnny O'Keefe. During the 1960s and early 1970s the channel continued to broadcast programmes on popular music, including the pop show "Hitscene", performance specials by groups such as Tully and Max Merritt & The Meteors, as well as the magazine-style programme "GTK", which premiered in 1969 and screened for 10 minutes, four nights per week at 6:30 pm, immediately prior to Bellbird and the 7:00 pm news bulletin. In 1967, the weeknightly television current-affairs programme "This Day Tonight" was launched on ABC-TV.