"I am tonight sat at the new Tyros 4 playing and working my way through the big sounds that this keyboard is supposed of offer. As the evening as progressed one MAJOR thing I have found with Tyros 4 is problems with polyphony - big problems!
For example, if I choose the VocalFoxtrot style from the Ballroom style section and then try to play a right hand chord with the notes D F G Bb and D - the keyboards backing vocals just vanish.

And this is apparent on other styles too!

The more you play this keyboard the more you find that anyone who can play block chords in the style or organ or big band suddenly hits a stumbling block and a big one. WHY after just 48 hours am I finding this. Surely Yamaha would have played this keyboard before releasing it? Wouldn’t they?

As they consult more and more amateur players for their design input they are forgetting those who actually want to play these instruments and not just sit button pushing as part of their retirement. After spending the best part of £3500 for a keyboard, this has to be a very annoying lack of detail from Yamaha. If you are going to create a keyboard that gives you complex backing, then at least make sure the keyboard can handle it.

As we work through our Tyros 4 in more detail we will keep you updated of the pros and cons of this instrument. It has to be said, at this point, this is the most annoying major issue that I have with this keyboard and am sure that other real players out there will experience this problem also.

Increase polyphony or cut back your styles - but don’t produce keyboards for mindless robots who just want a box to make their one finger playing sound good. Keep going down this route and we will have the X Factor of Keyboards! All looks and no talent."