Complex sentence: "Don't Stop the Music" debuted at number 94 on the US "Billboard" Hot 100 chart in the issue dated December 8,2007, and peaked at number three on February 16,2008, becoming Rihanna's fourth top-three single.
Split into simpler sentences: Don't Stop the Music debuted at number 94 on the US "Billboard" Hot 100 chart in the issue dated December 8,2007. After two months on the chart the song peaked at number three on February 16,2008, Rihanna's fourth top-three single.