My program HARMONY does all that on a PC, AND handles grace notes AND imports/exports abc format, for $25. It will also GENERATE chords to accompany the tune.

You can put notes onto the score using Drag and Drop if you want.

It understands "Part" specifications for dances, so you can program
A (AB)*2 (AC)*3 for example.

You don't need a MIDI keyboard, but you CAN use it. As Leenia says, trying to play in EXACT time is almost impossible. I do agree that the quickest way to get a tune in is by typing it as an abc file - that's what abc was designed for.

And I am here to update the program if you need!

Try it for free : from here