Mimicking Chorus Vocals

Does anyone have any tips for making one or a few vocal tracks sound like a small vocal ensemble?  I have X1 Producer with no aftermarket plug-ins.  Any info would be appreciated.

Double, triple and quadruple overdubs. Like double-tracking except instead of pushing the second (and third and fourth) duplicates back in the mix you bring them all out front at equal volume (but panned slightly apart).

I read about an interesting technique, where one person played every part in a string ensemble. They set up chairs as if they'd be occupied by 20 players, and the performer moved from chair to chair as he did the overdubs. The result was an unusually believable ensemble sound. Making a believable choir depends on a similar illusion, but by varying panning and reverb settings for each overdub.

The biggest problem is singing very high or very low parts that are out of your own range. With V-Vocal or Melodyne, you can clone parts and pitch-shift them up or down an octave. You have to experiment with the formant control when you do this. When soloed, these cloned parts usually sound like utter crapola. But when carefully mixed in, they can add a great deal of depth and texture.

Another trick is subtle use of a chorus plugin. The trick is to not make it too obvious, and to vary the delay slightly from voice to voice.

I asked 8 of my friends at church to learn the part and recorded them.  it wasn't difficult and it sounded like a small choir with just those 8 voices (2 for each part).  you could also do that, then implement copying pasting, delaying, panning, etc to make it "bigger"

Get as many people together as you can. Have them track each part at least 2 times. Pan to taste. If you have folks with a big enough range have them sing every part in unison and just keep building harmony after harmony. If you have say 4 people and they sing each line 2X and then 3-4 parts you end up with a choir of 24 to 32 people in no time. Repeat and build it as much as you want/can and you can achieve a really big sound. Kind of the way Def Lepperd used to do it execpt that you want more of a choir sound than that slick rock/pop sound.

I usually use just one condenser mic and the other thing I do is on each take have people stand in a different location/distance from the mic to get some variety going.

Thanks everyone, I'll try some of the suggestions.