Workstation Tyros 2 Arranger ecc. Yamaha EX PRO

http://en.wikipedia.org/wiki/Yamaha_Tyros2
http://usa.yamaha.com/products/musical-instruments/keyboards/arranger_workstations/tyros2/?mode=model
http://it.yamaha.com/it/products/musical-instruments/keyboards/digitalkeyboards/arranger_workstations/tyros2
http://www.psrtutorial.com/sty/yamaha/Tyros2/tyros_2.html