I'm personally a bit disapointed with the 'solo' sax sounds on Tyros, but on the other hand, the Tyros' 'sax section' voices sound quite impressive imho:
http://www.yamaha-tyros.de/demos.php

Scroll down to Tyros 'Voice Demos' section and have a listen to the 'LIVE Sax Section' with acoustic bass, trumpet, brush kit demo. - Scott
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