911. I've Got You Under My Skin by Frank Sinatra (1956)

Cole Porter wrote "I've Got You Under My Skin" in 1936. It appeared in the musical Born to Dance that year. Sinatra adapted the song for himself in 1946, but it did not become fully Sinatra-ized until he recorded it a decade later with a band. Since '56, the song has been associated with Sinatra and is considered one of his signature works.

http://www.youtube.com/watch?v=ab4VD_ll3h0

The Four Seasons scored a top 10 hit covering it in 1966.

http://www.youtube.com/watch?v=WnaeZTE7Pdo

The song re-emerged in the nineties as a duet between Sinatra and Bono from U2.

http://www.youtube.com/watch?v=sL_EKEVtmSU

930. O Fortuna by Carl Orff (1936)

German composer Carl Orff's "O Fortuna" has become a staple of western popular culture. It's been used in Excalibur, Detroit Rock City, and The Doors. The New England Patriots and Milwaukee Brewers have incorporated it into their games. Orff himself was a Nazi favorite. However, he also had ties to the resistance movement. The true level of Orff's complicity with or opposition to Nazi Germany is a matter of great debate.

http://www.youtube.com/watch?v=mDsffEtoF9A