Seeing Sounds
The album was produced solely by record production duo The Neptunes , consisting of Pharrell Williams and Chad Hugo , with additional assistance by rock band Spymob and was mainly written by Williams . 
<triplet> The Neptunes <subj> Pharrell Williams <obj> has part <subj> Chad Hugo <obj> has part <triplet> Pharrell Williams <subj> The Neptunes <obj> member of