Top 100 Music Hits by: Billboard.com

As a DJ and music lover I'm always keeping up to date on what's hot through many different outlets such as record pools from Promoonly, ERG Music, DJ City, Crooklyn Clan and more.  Their is no place that I would rather go to for music then "The Billboard Music Chart" which is the most reliable source for all music fans and DJs alike.

The Billboard charts tabulate the relative weekly popularity of songs or albums in the United States. The results are published in Billboard magazine. The two primary charts – the Hot 100 (top 100 singles) and the Billboard 200 (top 200 albums) – factor in airplay, as well as music sales in all relevant formats.

On January 4, 1936, Billboard magazine published its first music hit parade. The first Music Popularity Chart was calculated in July 1940. A variety of song charts followed, which were eventually consolidated into the Hot 100 by mid-1958. The Hot 100 currently combines single sales, radio airplay and digital downloads.

http://www.billboard.com/charts/hot-100#/charts/hot-100