I have  request and hope someone can help me but it's a bit out of left field.

  Im not an expert on things 'MIDI' so please forgive my ignorance.
  Basically i want to use a music program which let's me use my qwerty keyboard as an input device for playing music.

  I know there are many simple free and comercial programs that let me do this and i have one called 'happyEO'. The program i have allows me to assign the notes to almost whatever key i like but not completely. Also i have to hold down shift or space in order to play a sharp or flat.

 I want a program that let's me assign the notes to absolutly any key i like, 'including the F 1-12 keys. Also i want to be able to assign the sharps/flats to keys and not have to hold down an activator such as the space or shift key in order to sharpen or flatten a note.

  I don't need to do anything else with the program except assign the keys and be able to play music with my keyboard. It would be nice if it had various instrument sounds but even if it's just one sound would be acceptable for my purposes.
 

  The total freedom in key assignments is a key requirement though.

  Sorry if this forum isn't the place to ask such advice but i couldn't find such a flexible program by searching.
 
  Thank's,
 Poita.