The Bach Stradivarius 72 Bb Trumpet is the best Bach has to offer for professional players looking for a dark sound. The secret is in the Bach #72 bell, which provides a powerful, dark sound. Also coming standard are the #25 leadpipe and .459" bore, both offering a centered tone with excellent intonation. The Bach 72 is a perfect choice for a trumpet player looking for orchestral work. The reverse leadpipe creates a smoother pipe for the air to travel through, allowing for a smoother sound.