18 SHOW-STOPPING GRAMMY COLLABORATIONS (harpersbazaar.com)

1) Kendrick Lamar and Imagine Dragons, 2014
2) Beyonce and Jay-Z, 2014
3) Rihanna, Kanye West and Paul McCartney, 2015
4) Beyonce and Tina Turner, 2008
5) Cee Lo Green, Gwyneth Paltrow and The Muppets, 2011
6) M.I.A., T.I., Jay-Z, Kanye West and Lil Wayne, 2009

7) Jay-Z, Linkin Park and Paul McCartney, 2006
This surprising performance started out with Jay-Z and Linkin Park on "Numb/Encore," a hit track from their collaborative album, Collision Course, and transitioned to feature McCartney on "Yesterday" over the same beat.

8) Christina Aguilera, Pink, Mya, Lil' Kim, Missy Elliot and Patty Labelle, 2002
9) Eminem and Elton John, 2001
10) Sara Bareilles and Carole King, 2014
11) Bruno Mars, Sting, Rihanna, Damian Marley and Ziggy Marley, 2013
12) Madonna, Gorillaz and De La Soul, 2006
13) Joss Stone and Melissa Etheridge, 2005
14) Kanye West and Daft Punk, 2008
15) Usher and James Brown, 2005
16) Lady Gaga and Elton John, 2010
17) Jennifer Hudson, Christina Aguilera, Florence Welch, Martina McBride and Yolanda Adams, 2011
18) Justin Timberlake, Al Green, Keith Urban and Boyz II Men, 2009