Scott,
Thoralf is one of best Yamaha German demonstrators and was train as a classical pianist.
The First demonstration I attended to hear the Tyros4 was given by Thoralf who can really bring any keyboard to life and with the Tyros4 he made it sing and sound out of this world.
Although my German is still far from good Thoralf speaks excellent English and I was Fortunate enough to talk to him about various aspects of the Tyros 4.He is a real charming ,modest and down to earth professional
I am attending a private dinner on Friday where he will again be playing the Tyros 4.If a recording is made I will try to obtain a copy.
you will find numerous of his videos on your tube which are well worth watching.
Although he consider the Tyos4 as a light weight he also says it is the musical heavyweight,however his favourite instrument is the god old Rhodes
Excuse the ramble but thought it may be of interest.
Gilbert.