The solution to my problem was right under my nose all along.I always knew MidiNotate,and then Composer was very good at midi notation. When playing out,I may use some midifiles saved in Composer.I play them off my laptop with melody muted.

The problem has been storing sheet music for songs played totally from my Technics kn7000. I scanned about 800 lead sheets of various sizes and quality.To get the whole sheet,many times meant reducing the note size too small to read.To scan two halves,too cumbersome.

Solution:
I record the song off the sheet music into my keyboard at one pass.
I save the song to disk in midi format. I put the floppy into the laptop,and the most beautiful transcription appears. I convert this to lead sheet ,and I can have a stationary,or paginating score.

So simple,yet I missed it.