Professional Series, Bb flugelhorn, Gold-brass, Bell: 152mm (6"), Bore size MS: 11.00mm (0.433"), 3rd valve slide trigger Finish: Silver-plated, Mouthpiece: 11F4
he 631GS is the traditional Yamaha flugelhorn used by many of the world's leading musicians. The tone is characterised by an extremely round, mellow sound with an abundance of tonal colour. It features a gold-brass bell for a soft dark sound and a beautiful lacquer finish.