Here's a look at the chart-toppers on iTunes for the week of October 15, 2012.

iTunes' Official Music Charts for the week ending Oct. 15, 2012
Top Songs:
1. "I Knew You Were Trouble," Taylor Swift
2. "Gangnam Style," PSY
3. "Skyfall," ADELE
4. "One More Night," Maroon 5
5. "Die Young," Ke$ha
6. "Some Nights," Fun.
7. "We Are Never Ever Getting Back Together," Taylor Swift
8. "Diamonds," Rihanna
9. "Red," Taylor Swift
10. "Too Close," Alex Clare

Top Albums:
1. "The Heist," Ryan Lewis, Macklemore
2. "Babel," Mumford & Sons
3. "Pitch Perfect (Original Motion Picture Soundtrack)," Various Artists
4. "Halcyon," Ellie Goulding
5. "Lace Up," MGK
6. "Night Train," Jason Aldean
7. "Don't Panic," All Time Low
8. "The 2nd Law," Muse
9. "Live In Brooklyn," JAY Z
10. "Some Nights," Fun.