This week's most popular adult top 40 songs, ranked by adult pop airplay detections as measured by Nielsen Music.
The ranking that reflects the tempo-driven, family-friendly radio format marks its first two decades of hits.
The links on this page contain lists of songs that have reached number-one on the Billboard adult contemporary chart. This chart was first printed in Billboard.
In North American music, adult contemporary music (AC) is a form of radio-played popular .. In , Billboard created a new chart called Adult Top 40, which reflects programming on radio stations that exists somewhere between "adult.