How do I recover the accompaniment?

When you say changes by itself - please describe.
Try a factory reset : Hold down highest white key whilst turning on.

If this doesn't solve the issue please report more details.

Please advise what model of keyboard you have purchased. Some do not allow recording without accompaniment. I might be able to help.
Dan

you can obtain undelet software to do this but do not use the machine too much before attempting the procedure, too much use might lead to the areas where data was stored becoming written over. If the data was very important I would contact a data recovery specialist, one with a proven track record.
Good Luck

Hey, I had the same problem. You just have to off the Keyboard (by pressing the standby/on button).

Now hold the last key / highest key.
Keep holding it
And
On the keyboard while holding it.

Problem will be solved.

go to the utility settings, accompaniment settings..turn off.

I suspect you keyboard is split. Please check - if so unsplit the keyboard.

Make sure you are using NAME BRAND alkaline batteries that are in date. Rechargeables will NOT work in these.

You need an application to recover your deleted files.

Some of these data recovery applications are free and does not cost you a dime.

Others you will have to purchase.

Here is a YouTube video that show you how to recover your deleted files.

http://www.youtube.com/watch?v=ndLXZbqQRAY

Good luck

Do an initialization (factory reset) by holding the HIGHEST WHITE key down and turning on the power. Hold the key for an extended time until display confirms initialization complete. This will restore unit to factory defaults.

Turn off the "ACMP" button... that is the "Accompaniment" function that controls whether the "Style" you select will accompany your playing or not...