Pop songs that borrow melodies from classical music or old, public domain songs. I'll start the thread with two examples: * * * Elvis Presley "It's Now or Never". The melody comes from "'O Sole Mio", a Neapolitan song written in 1898. Elvis came by the tune through Tony Martin's "There's No Tomorrow", which also borrows the melody from "'O Sole Mio". Elvis: http://www.youtube.com/watch?v=lnm0dLThp9c 'O Sole Mio (sung by Mario Lanza): http://www.youtube.com/watch?v=XT2kHxSFMS0 * * * Eric Carmen "All By Myself". The verse borrows from 2nd movement of Sergei Rachmaninoff's Piano Concerto No. 2. (Carmen lifted melodies from classical music in other songs too.) Carmen: http://www.youtube.com/watch?v=2gqaSE_9HuY Rach: http://www.youtube.com/watch?v=NWftenCnvXU Wikipedia's entry on this song says: "Carmen believed [Rachmaninoff's Piano Concerto No. 2] was in the public domain. Having found it was not, only after the record had been issued, Carmen had to come to an agreement with the Rachmaninoff estate. Early versions, therefore, only give writing credits to Carmen, but later versions also credit Rachmaninoff."