How can I turn a recorded voice into multiple voices that sound like a group of singers?

Well you could copy the single vocal performance on multiple tracks and then use various pitch changing techniques (plug-ins) to alter the performance up a 3rd or a 5th etc for harmonies. If you are the performer you could sing (overdub) the background vocal tracks. Also look at the various Channel Strip Settings for vocals.

For me Melodyne would be the first choice to remotely come near the real thing, if……..you know what you're doing. Once you know how to operate, it will be very tempting to always use it. Give it a try, it comes with excellent instruction footage.

Good luck!

I find that making multiple copies of a single voice onto multiple tracks..and then using something like QuikQuak's PitchWheel to change/alter the timbre/pitch of the copies...along with different stereo placements and delaying each track backwards and forwards using Logic's track inspector functions.. works very well and doesn't cost a fortune compared to Melodyne...

You can try out pitchwheel for free at QuikQuak's website...

By far the most natural way to achieve this is for the singer to perform multiple takes - even if you've only one singer. At it's simplest, you could just double track the vocal part, although I prefer 3 parts - panned centre, left & right. Then repeat this process for each harmony, & mix accordingly.

Melodyne & some of the above methods do work on am single voice, but phase cancellation can be an issue if your not careful with each part's timing & panning. If you can only get a couple of decent takes from the singer, far better to perform any harmony/pitching techniques on the second take to avoid any phase issues. It's not uncommon for a singer to perform each vocal part 5-10 times, then comp (edit) the best takes so that you end up with 3 decent takes.

If you've only only one voice to work with Antares Harmony EFX is a useful alternative.

http://www.antarestech.com/products/harmony_efx.shtml

What FLEXIS said. Except maybe about Antares Harmony EFX. I never loved it much. Does make it quick and easy though.

But if you are doing multiple takes in order to create double tracks or harmonies, try to make each new voice sound a little different, i.e. thicker or thinner, by altering the voice placement in your throat. Any variation will greatly enhance the effect.

Well waddaya know.

Suddenly Antares Harmony EFX is on special 3 days only for $39.

Maybe I didn't love it much on demo, but for $39 it could do some pretty useful stuff.

Just saying...

http://www.antarestech.com/products/harmony_efx.shtml

Yes, but once you have bought Melodyne, there is no looking back. Its usefulness goes WAY beyond merely tricking up a few extra backing vocals. Apart from Logic itself, it is my most go-to tool.