Keri Hilson's Pick From Hour 4:

Miss the show? Here's #70 - 61 from Top 100 Killer Collabos:

70. Jessie J & B.o.B. “Price Tag”

69. T-Pain, Wiz Khalifa & Lily Allen “5 O’Clock”

 68. Usher & Alicia Keys “My Boo”

67. Tinie Tempah & Eric Turner “Written In the Stars”

 66. Nelly,P. Diddy, Akon & Murphy Lee “Shake Ya Tail Feather”

Nelly F/P. Diddy, Akon & Murphy Lee “Shake Ya Tail Feather”

65. Enrique Iglesias & Pitbull “I Like It”

64. Gym Class Heroes & Neon Hitch “Ass Back Home”

 63. Christina Aguilera & Redman “Dirrty”

62. Jay-Z & Kanye West “Otis”

61. Shakira & Wyclef Jean “Hips Don’t Lie”