The manual can be downloaded here, http://www.yamaha.co.jp/manual/english/index.php just type NP 30 into the model search box. The voices available are on page 18 and are:

G Piano 1
G Piano 2
E Piano 1
E Piano 2
Church Organ 1
Church Organ 2
Strings
Harpsichord 1
Harpsichord 2
Vibraphone

Hope this helps

Bill
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English Riviera:
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (I�m definitely staying put).