The tyros styles were recorded using a yamaha electric guitar and GR50 midi convertor. That's probably about as close as you will get to realistic strums, though personally I find the strumming effects of the tyros too quantized - for a real guitarist I would expect subtle delays between each note. Perhaps though this could be introduced afterwards using a sequencer.
I produce strumming effects usually by stepping on the sustain pedal and varying the velocity at which I play vamped chords. At the same time instead of hitting the chords all fingers simultaneously, I "ripple" from left to right, takes a bit of practice though! Another suggestion is to split the keyboard and map the same voice to both sides. Transpose the lower split voice up 1 or 2 octaves so that you can play the same sound with both hands. It gives more control.
The key factors include only using 6 notes max at any one time, stick within the range of a real guitar and also study real guitar chords and the notes used.

S.


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Simon G.K. Williams
simon@svpworld.com
Creative Music & Multimedia
http://www.svpworld.com
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