Pop Song - Need vocalist who can also try their own melody ideas

Looking for: VOCALIST Studio Access Required: YES

(I accidentally put the wrong budget to begin with, but I edited it now, sorry for the confusion)

So basically, I have produced a song, then my songwriting partner and I were laying down what we wrote. We will need a vocalist for this , obviously his vocals are very rough guide vocals only , but we also would want to work with someone who would feel free to muck around with their own melodies, feel free to change things to give it a shot, and maybe even if they want , they can muck around with the pre chorus (synth part right before the drums and bass kick in) if they have any ideas. This is a work in progress , basically it's mostly done, but I want to be able to have the vocalist try any of their ideas as well , and if it sounds better than we will add that in. Hence the 35 percent royalties.

This song is also basically getting ready to be signed to a label (because they're a bigger label, we can't legally mention who they are yet until they approve of it and sign it, which is almost guaranteed)

link to the instrumental if anyone wants to have it to play around with