First choose a MIDI file (the Easy Play Beethoven is a good one -- see
the download page for where this can be found) then select which part
that you want to play along with (e.g. the piano part or the strings
part etc). Then select the "left" hand or the "right" hand or if you
are feeling really brave choose "both hands" and try to play along.
The "Follow You" mode make it really easy to sight read the scrolling
notes as the whole accompaniment will stop and wait for you to find
and play the right notes.
The accuracy bar monitors how well you are playing. If you are skilled
enough the accuracy bar will go right to the end and then turn blue.
But every time you are too slow or playing out of time, then the
accuracy bar slips back a bit.