Re: Issue 687 in lilypond: Enhancement: inequal MIDI quantization of equal durations (swing, rubato)

[lilypond]

Comment #13 on issue 687 by chicagogrooves: Enhancement: inequal MIDI  
quantization of equal durations (swing, rubato)
http://code.google.com/p/lilypond/issues/detail?id=687

+1 to your suggestion for a scheme variant, arvidgr, and for many other  
great points.

We can combine this with adam.spiers' suggestions for playing slightly  
in-front or behind the beat, and use a similar syntax, so that composition  
of the two commands would be much easier, and more in control of the user.

  \shift ly:make-moment(1,128) { \swing #2 #1 { c4. c8 c8 } }

For reference, the two expressions below are equivalent (though only the  
former is valid lily syntax, the latter is to show how the numbers are  
arrived at)

  { c4.*10/9   c8*2/3      c8*4/3     c8*2/3 }
  { c4. + 1/6  c8 - 1/6    c8 + 1/6   c8 - 1/6 }

I'd be really happy to start sharing swing functions with each other now  
that an implementation technique seems available to mere mortal  
programmers !