Only duos

[John Doe]

http://www.thesnipenews.com/thegutter/wp-content/uploads/2012/02/GO-album-cover.jpg

 

[Noor]

Flo and eddie, the turtles Happy Together

 

[Aphro]

http://thewordzombie.com/wp-content/uploads/music-Milli-Vanilli.jpg

Can you still call it a duo if they never actually sang?

 

[Super-Surprise]

http://images4.wikia.nocookie.net/__cb20111123184906/batman/images/8/86/Batman-and-robin-tv.jpg

 

[lemonbread]

http://ecx.images-amazon.com/images/I/51ruuk3%2BI5L.jpg

 

[lemonbread]

Samson and Delilah.

http://blog.proofdirectory.org/wp-content/uploads/2012/10/samson-delilah-500x300.jpg

 

[Killswitch]

Seals and Crofts

http://www.youtube.com/watch?v=BthCLLO-PY0

 

[ms_ann_thrope]

Azure Ray - Sleep


http://digboston.com/wp-content/uploads/2012/09/CL_AzureRay.jpg

 

[lemonbread]

http://4.bp.blogspot.com/-T_dYyTdO_VU/Tjcr7AAC0VI/AAAAAAAAALw/xTC8HHlPUF8/s1600/Tegan___Sara_.jpg

 

[ms_ann_thrope]

The Raveonettes - Endless Sleeper


http://3.bp.blogspot.com/-NLBAbF3aLtE/TnhrSqJfT2I/AAAAAAAACOo/FLTkSY4RNB8/s400/rave.jpg

 

[Aphro]

Hall and Oats - You Make My Dreams Come True

 

[Colonel Hogan]

Joe Cocker and Jennifer Warnes -- Up Where We Belong

http://luzialight.files.wordpress.com/2012/09/joecockerjenniferwarnes1.jpg

 

[ms_ann_thrope]

Indigo Girls perform "Share the Moon"


http://img.cache.vevo.com/Content/VevoImages/video/8A14B8B938D0201E1EC39E0B677E31CC.jpg

 

[Colonel Hogan]

The Everly Brothers -- Walk Right Back

http://tothesublime.typepad.com/.a/6a010536c49f05970c01a3fba6cec5970b-pi

 

[ms_ann_thrope]

http://msfitmag.com/wp-content/uploads/2013/07/masters-and-johnson.jpg

 

[Colonel Hogan]

http://msfitmag.com/wp-content/uploads/2013/07/masters-and-johnson.jpg

Excellent! *snicker*

 

[Colonel Hogan]

Mickey and Sylvia -- Love is Strange

http://www.classicurbanharmony.net/images/45/683%20Mickey%20&%20Sylvia%20copy.jpg

 

[Learnsmith]

This Mess We're In ~ PJ Harvey ft. Thom Yorke

If you do not listen to this shit, I will disown you.

 

[Colonel Hogan]

Nancy and Frank Sinatra -- Something Stupid

http://www.zoomerradio.ca/wp-content/uploads/2013/04/Nancy-and-Franksinatraapril15.png

 

[John Doe]

http://thewordzombie.com/wp-content/uploads/music-Milli-Vanilli.jpg

Can you still call it a duo if they never actually sang?

While the OP established a trend of singers, they didn't explicitly state that the thread should be limited in that way, so...yes?

 

[Not Normal]

http://3.bp.blogspot.com/-VfbbWSRBp6M/Tn_RHwzkcTI/AAAAAAAAVII/AWWnoKQRQI0/s1600/Statler-And-Waldorf-On-Th-009.jpg

 

[Libsam]

The White Stripes

http://www.vividscribe.com/wp-content/uploads/2012/03/white-stripes-halloween-music.jpg

Jolene - The White Stripes

 

[miles]

http://ts2.mm.bing.net/th?id=HN.608013055546557610&w=214&h=172&c=7&rs=1&pid=1.7

 

[Libsam]

Louis Prima & Keely Smith

http://s02.artist.images.jango.com/9fc/9fc4fe91dff111ef8ac1b39d692fe366_lg.jpg

Just a Gigolo

 

[Colonel Hogan]

Santo and Johnny -- Sleepwalk

http://3.bp.blogspot.com/--fkGRuEspQE/Td0jY4d8GeI/AAAAAAAAEoU/fEciCOQY1bQ/s1600/santoJohnny.jpg