Drake Was 'Best' on Hot R&B/Hip-Hop Songs for the First Time: This Week in Billboard Chart History, 2009 | Billboard – Billboard
39 Best One-Hit Wonders of the 2000s - Top Songs of 2000s
UK Number 1 Songs - 2009
Lady GaGa to The Black Eyed Peas: Number One Songs From 2009 | Billboard – Billboard
Billboard Year-End Hot 100 singles of 2009 - Wikipedia
Billboard Year-End Hot 100 singles of 2009 - Wikipedia
Black Eyed Peas, Kings Of Leon Top iTunes 2009 Charts – Billboard
The Billboard Book of Top 40 Hits, 9th Edition: Complete Chart Information about America's Most Popular Songs and Artists, 1955-2009' - Fort Myers Florida Weekly
Top 100 Songs of 2009 - Billboard Year End - YouTube
Andy Kellman's 100 Favorite Charting R&B Singles of 2000-2009
Top Of The Charts 2009 | buy now in the Stretta sheet music shop.
100 Greatest Songs From 2009
Year-End Chart 2009 – UK - YourMusicCharts
CHARTS: White People Are No Longer Relevant in Pop Music, in Terms of Sales
Top Hits of 2009 - playlist by Spotify | Spotify
Billboard Year-End Hot 100 singles of 2009 - Wikipedia
K-Ville Entertainment
The Weeknd makes music charts history as the first to nab the top two spots since 2009 | National Post
Billboard Year-End Hot 100 singles of 2009 - Wikipedia
iTunes Top Selling Songs and Albums of 2009
Top Ten Songs Of Each Year 2000-2009
BEST SONGS OF 2009 - YouTube
Top 100 Pop Song Chart for 2009
