Adult Alternative Airplay (also known as Triple A or Triple A Airplay, and formerly Adult Alternative Songs and Triple A Songs) is a record chart currently published by Billboard that ranks the most popular songs on adult album alternative radio stations. The 40-position[1] chart is formulated based on each song's weekly radio spins, as measured by Nielsen Broadcast Data Systems.[2] The current number-one song on the chart is "Nobody's Soldier" by Hozier.[3]