Believe it or not since the 1850’s federal courts have been dealing with copyright infringement. Back then you think it would be a lot easier to come up with an original piece of music.
Former rap superstar Vanilla Ice, who was on top of the pop world in the '90s, has been vocal about the current crop of pop tarts, like Justin Bieber and One Direction.
The 90's seem to stick out to me more than other decades for it's one - hit wonders, however; either decade you may have grown up with the music no doubt leaves with you a strong sense of nostalgia.
The sampling process of the 1980 song "Under pressure" by Queen and David Bowie was used without permission, but it is likely that Vanilla Ice agreed to pay Queen and Bowie for it's use, no lawsuit was ever filed.