YFG-812 Yamaha BassoonThe 812, with a heavier body wall, features a rich, authoritative sound. It is ideal for players who prefer a round, warm tone, and who require the power to balance the volume of a modern symphony orchestra. Two Body Types The YFG 811 (left) features a standard body wall thickness, providing universal compatibility and broad expressive capability for the widest range of players and playing styles. The YFG 812 (right) has a heavier 4 millimeter thick