Adult hits is a radio format that draws from a wide array of popular music. The format typically enough of a backlog of popular music from the rock and roll era had developed to support a format based on them; oldies stations, however.
Oldies is a radio format that concentrates on rock and roll and pop music from the latter half of their AM sisters due to the new FCC rules on simulcasting, that functioned as a hybrid of oldies and the adult-oriented softer rock hits of the day.
A third upper demo format, R&B Adult/Oldies, also declined -7.1%. In 2014, there were 222 Adult Standards stations and in 2009, some.
Propelled by an upsurge in the number of classic hip-hop stations, the R&B adult/ oldies format category grew by a whopping 30% in 2015.