I don't know a thing about either, nor have any midi backing  files.
Need help with a few popular standard files of each.
 you  experienced musicians should know what will go over best!
 Even be happy  with the name of some good ones to use and I wil search 
them  out.
  
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 Square dance tunes are often common  songs, usually country flavored tunes, where the lyrics have been changed  to 'call' the dance patterns.
 My mother was a square dancer/caller  and teacher for a while and naturally, anything she gets into she trys to  drag me into as well, so I learned a couple singing calls way well over 25 years  ago!
 One of them was to a tune called  "Oh Johnny Oh". This was a beginners  dance.
  
 Here's the lyrics:
  
  
 Now you all join hands and you circle the  ring
 Stop where you are, give your honey a  swing
 You swing that little gal behind  you
 you swing your own if you have found that she's  not flown
 Allemande Left with the corner gal
 Do-se-do your own
 Now you all Promenade  with the sweet  corner maid
 Singing Oh Johnny Oh Johnny Oh
  
 Repete 4 times so the original couple are back  with each other.
  
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 Here's a website that will give you a lot  of lyrics for singing calls.  I've included a couple sets of lyrics  below.
  Cat  >^..^<
  
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 Johnny B. Good
  
 Circle  left
He's down in Louisiana close to New Orleans
Well back up in the  woods among the evergreens
Do an allemande left the corner, dosado your own
Left allemande and weave the ring
He carries his guitar in a  gunny sack
Swing your  lady round and promenade back
He plays in a big band,  playing his guitar
Go...
Johnny Go...
Go Johnny  Go
 
FIGURE 1  
Heads touch  1/4, boys run,  touch 1/4
Follow your  neighbor and spread
Girls run, boys single  hinge
Diamond circulate, girls  single hinge
Tag the  line all the way, girls U-turn  back
Swing that corner, promenade
He sits beneath the trees by the railroad  track
Strumming to the rhythm that the engines  make
 MIDDLE  BREAK  
Four ladies  chain across
Chain them  back to a dopaso
Partner by the left, corner by the right,  partner left
Head ladies center  teacup chain
Go Johnny Go
Who never,  ever learned to read & write so well
But he could play a guitar just like  a ringing bell
Go Johnny Go...
Go Johnny Go...
Go Johnny  Go
 FIGURE 2  
Sides square thru  4, swing thru,  boys run
Ladies single  hinge, diamond  circulate
Flip the diamond, ladies trade, linear  cycle
Slide thru, swing and promenade
The people passing by they would stop, and  say
Oh my what that little country boy could  play
 CLOSER  
Sides  face grand  square
His mother told him some day you'll be a man
And you will be the  leader of a big old band
Many people coming from miles around
And hear  your music when that old sun goes down
Circle left
Some day your name will be  in lights
Allemande  left, swing,  promenade
Saying Johnny be good tonight
Go Johnny Go  ...
Go Johnny Go ...
Go Johnny Go  
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 Ain't Misbehavin'
     - OPENER - MIDDLE BREAK -    CLOSER    
 Circle    left
 *No one to talk with - all by myself
 No one to walk with - but    I'm happy on the shelf
 Left    allemande, box the    gnat, 4 ladies    promenade
 (Music only)
 Turn    partner right, full turn around
 Left allemande, promenade the town
 Ain't misbehavin', savin'    my love for you
 (Music only)
 
 
- FIGURE    
 4 ladies    chain cross the ring
 Heads/sides    promenade 1/2 way I sing
 Walk    in, pass thru, cloverleaf and then
 Centers square    thru 3/4 go
 Left    allemande, dosado
 Swing your corner, promenade you know
 Ain't misbehavin', savin'    my love for you
 (Music only)
 
 
- ALTERNATE    LYRICS    
 **Now I know for certain    you're the one I love
 I'm through with flirtin' just you I'm dreamin'    of
 
 ***I don't stay out late, I don't care to    go
 I'm home about eight, just me and my radio
 
 
- TAG    
 Ain't misbehavin', savin' my love for    you
-  
 
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 Ace in the Hole
  
     - OPENER - MIDDLE BREAK -    CLOSER    
 Circle    left
 Well, you got to have an ace in the hole
 A little secret that    nobody knows
 Well left allemande the    corner, dosado
 Left allemande the corner of the hall and    weave that ring
 Well, you got to learn to    play your cards right
 You swing your own round and promenade
 Don't put it on the line for just one    roll
 You got to have an ace in the hole
 
 
- FIGURE    
 Why don't those heads square    thru and get me 4 hands ya know
 Around that corner lady    dosado
 Why don't you swing thru and then, the boys run right
 You bend    the line, a right and left    thru, you turn the girl tonight
 Well flutter wheel go full around now slide thru and swing
 Swing that girl    and promenade her
 Well life is a gamble,    they all say
 You got to have an ace in the  hole
 
 
- TAG    
 You got to have an ace in the    hole
 
   
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