I was in the high school choir for 5 years, never learned a single note of real sheet music, so I'm sure I qualify as an expert.
 
HOW TO FORM A SOPRANO/ALTO/TENOR/BARITONE CHOIR

A) Make sure the Baritones are all big tall guys. They have longer vocal chords and they will reach those low notes when you need them. For performance night, black socks only. Trust me - it counts. 

B) Make sure the Tenors are guys under 5ft (or at worst, ladies over 6'4") - they will have the chops for those testicle-squeezing high notes (found in the tenor clef ... there is such a thing, right?) without going into falsetto (which is clearly German for Waltz Ghetto ... pretty, pretty sure...). The ladies (usually sans testicles) will usually sound like pitch corrected male bass singers when they sing tenor, so keep their numbers down to a minimum or their disturbing formants will be noticed and turn your stomach somewhat. 

C) Make sure the Altos are really fearsome looking warrior women. They will handle the notes nobody really wants to hear and can deal with being ignored in the same way bass players are invisible to the naked eye the minute they take the stage. 

D) Sopranos that can really sing (and sing high) always wear fancy dresses, have long hair and stand less than 4'8" in heels. You need to locate them at the front of the choir so they can be seen, otherwise - if placed behind the baritones or tenors - they will lose it completely because they are not being noticed, esp. for their mastery of high notes that (they think) would make Mariah Carey green-over with envy. They are well-known for thinking themselves hilarious by singing, "Me-me-me-me!" when warming up their soap-bubble sized pipes (lungs, to the less musically erudite present).
 
Well, hope I've been of great help. Next time you go to form a choir, you can take the above advice to the bank and become famous like that other choir-master ... uh, whatever his name was. Y'know who I mean, right?
 
Glad to be of assistance! 

Flagrant Regard
being ignored in the same way bass players are invisible to the naked eye the minute they take the stage. 
 

So the reason I can't hit those high notes anymore is because I'm too tall?
 
But I've shrunk by a quarter of an inch! My range should have increased.
 
Although I do hit low notes easier now, especially first thing in the morning before I've had my coffee. Am I a baritone before noon and a tenor at night?

bitflipper
 
 a tenor at night?

 
I'll not touch that line with a 20 foot pole.

bapu

bitflipper
 
 a tenor at night?

 
I'll not touch that line with a 20 foot pole.

Not to confuse that with "tenner" at night....
 
ten·ner

ˈtenər/
nounBritishinformal

noun: tenner; plural noun: tenners

a ten-pound note.

I knew there was some reason I couldn't sing.
 
I'm not big enough or small enough or fearsome enough and I don't have any fancy dresses. 

drewfx1
I knew there was some reason I couldn't sing.
 
I'm not big enough or small enough or fearsome enough and I don't have any fancy dresses. 

Just plain dresses? 

Mesh

bapu

bitflipper
 
 a tenor at night?

 
I'll not touch that line with a 20 foot pole.

Not to confuse that with "tenner" at night....
 
ten·ner

ˈtenər/
nounBritishinformal

noun: tenner; plural noun: tenners
a ten-pound note.

As used in really heavy music.

As I understand it, the pound was originally literally one pound of silver. Be glad they abandoned that system! Your wallet would need wheels.

bitflipper
As I understand it, the pound was originally literally one pound of silver. Be glad they abandoned that system! Your wallet would need a wheelbarrow.

Weighted!!