 It was the network's original mission to avoid the trends of other oldies outlets and remain committed to the music produced from the beginning of the rock-and-roll era to the disco era (1955 to 1979), purposefully drawing the line of what they would (originally) never air at 1980.By 2005, oldies from the early 1970s were added in moderation, while the pre-1964 material was cut back slightly.In 2006, more late 1970s music was added and the pre-1964 songs were cut down to 2 or 3 per hour.