J Derulo Watcha say/ G.Malone ft Wayne What we need

[Suckzess]

I think you all know the song "What we need" by Glasses Malone and Weezy....since the song "Watcha say" by Jason derulo came out I've been asking myself since they use the same sample (Imogen Heap- Hide and Seek)
who was first? Think G.Malone appeared first on the internet but that doesn't mean anything....
Are there any informations about that?
Did derulo copy the idea?
I would like to know that.....whatcha say?^^