Audiotent Tip 123. Wide Vocals.
Here's how to create wide vocals from a single vocal stem.
First take your mono vocal and duplicate the channel twice. Pan one hard left and one hard right.
Next, delay each panned vocal with slightly different timings, between 10-40ms, will do.
Now detune one of the panned vocals by a few cents. Be careful not to do this too much otherwise it will sound unnatural. Balance the panned vocal channels lower into the mix, allowing the main mono vocal to take the focus.
This will give you a nice wide vocal while keeping the main vocal in the center.
You now have the perfect vocal and all you need next is the perfect backing track.