This week's episode of the Greatest Pop Stars looks at the pop stars who stood out from a truly packed month of pop stardom.

To the mainstream listener, these pop stars from the 2000s disappeared without a trace. Let's find out what really happened to them.

A schmaltzy ballad. A bubble-gum pop song. A raunchy rap anthem. All three Hot 100 hits feature Mars, a blockbuster singer ...

Dolly Parton returns to the Hot Country Songs chart, joining Sabrina Carpenter on a remix of "Please Please Please," which ...