The Bach Stradivarius 37 Bb Trumpet is the instrument that most professional players prefer. Like all Bach Stradivarius trumpets, the 18037 comes with a standard construction #25 leadpipe, bringing depth and color of sound, even intonation, and excellent response. The Bach 37 is one of the most popular of all Bach trumpets, and can be used in all genres from jazz to orchestra. The gold plating produces a slightly warmer tone perfect for all types of playing. The reverse leadpipe creates a smoother pipe for the air to travel through, allowing for a smoother sound.