The Adult Pop Airplay chart is published weekly by Billboard magazine and ranks "the most popular It is a format in which the genre is geared more towards an adult audience who are not into hard rock, hip hop, or soft adult contemporary fare. The main genres within this format are a mix of soft and energetic adult contemporary music alongside adult alternative rock and adult-oriented pop music. It is not to be confused with the Adult Contemporary chart which contains more ballad-driven songs played on the radio. The current number-one song on the chart is "I Knew It, I Knew You" by Taylor Swift.