I hate that instrumental part! It has like no melody and is such a generic sound common to house compositions... I love the cute melody synth that's in the PV version - I'll take that any day.
If you want to listen to that "gorgeous instrumental" part, here's Nicki Minaj's "Starships" (skip to 1:09)
Sorry if my comment sounds rude, I just realized it could be taken that way but I'm not trying to be. Just stating my (strong) opinion, lol.