Marvin Gaye's family won big when the judge ruled a $7.4 million prize in the 'Blurred Lines' case. But then, they can't go after 'Happy.' There has been some perceived similarities over Gaye's 'Ain't that Peculiar' with Williams' 'Happy.'

You can compare it if you want. Here's Gaye's 'Ain't That Peculiar.'

And Pharrell's 'Happy.'

And this was the mashup that might have started it all: