20's- Louis Armstrong 
30's- again prob Louis Armstrong again or Cab Calloway 
40's- any swing band you can name 
50's- Elvis 
60's- I hear a Crosby, Stills, Nash vibe here 
70's- Most likely Earth, Wind, & Fire 
80's- Human League like "Don't You Want me Baby" kind of thing 
90's- Haddaway "What is love" or La Bouche anything here 
00's- You're right with MGMT 
2010's- Dub Step for sure 
(i.e. any dance remix)