(melody) plagiarism

To prove that today's music industry has not many fresh songs, because it has already been sung, you've some accusations of plagiarism of simular melodies. But who can blame them? Covers are also allowed, so do you want the same music industry to be bankrupted with their artists together.
Now music is counting on their performances and sympathism (charm), rather than the music itselves. Fortunately, exceptions confirm the rules...

(Original)
Taio Cruz: Telling the world (from movie-soundtrack "Rio")



(Original)
OneRepublic: Marchin on



(Original?) NEW SONG WINNERS' SONG DSDS
Pietro Lombardi: Call my name