My keyboard is a Yamaha PSR EW300and I have to confess that it’s been neglected for a couple of years. Now it’s up and running again everything seems to be working fine except that pressing the Music Database button gets no response. I do know how to use it, I had it on a previous keyboard, but it’s not displaying the names of songs, just the last voice or style used. I’m distressed about this, as I used to spend many happy hours playing Here Comes The Bride to the settings for Funiculi Funicula (etc). Is there something that may need to be disabled to get it to function? It should not need ANY further settings beyond switch on, select MDB and play, right?