Multiple tempos at the same time and midi playback?

[Yakir Arbib]

Hi All,


My name is Yakir and I'm a pianist / composer based in Paris.

I am very new to LilyPond, so please pardon me if my question is
annoying or redundant.

I write modern classical music in which each instrument has its' own
separate tempo.  My question is, do you think it's possible to write
something like that in LilyPond using separate tempo commands for each
staff?

My second question is, do you know of any GUI or outside software
(such as Frescobaldi) where I could type Lilypond code and listen to
the midi playback from any point in the score when I want without
having to compile the file each time?

* I am visually impaired and use a screan reader to work, so please
suggest a program where I can actually type the code (not manipulate
the notes graphically) and listen to midi by a simple command?

Thank you very very much for your time and help!

All my best,

Yakir

Yakir Arbib

Http://www.yakirarbib.com/
Http://www.facebook.com/yakirarbib