Old songs have greater surface. Many more people have heard it over something popular today which 20% might have heard of. New music is usually much cheaper.

Old songs have greater surface. Many more people have heard it over something popular today which 20% might have heard of. New music is usually much cheaper. Even within the same artist. Would you lic. Bieber's Baby, baby O or something new. More extreme example would you lic gangnam style or anything newer by that artist?