The Yamaha YTR-6310Z is a professional-level B♭ trumpet designed in collaboration with jazz legend Bobby Shew, created to be a versatile "all-in-one" horn for both screaming lead parts and mellow, soft ballad playing. It features a unique "stepped bore" design, a 5-inch yellow brass bell, and a reverse leadpipe, which provide high efficiency, great projection, and a warm, flexible tone.

Key Features and Characteristics:

• Design & Sound: The "stepped bore" design offers a unique resistance that gives the player more control, allowing for a bright, sizzle-filled sound for lead work, yet it can be played softly for a warm, mellow tone.

• Build: The YTR-6310Z features a 5-inch yellow brass bell, a reverse leadpipe for smoother airflow, and a 0.445-inch (11.3mm) small bore, which contributes to its easy, responsive playing experience.

• Target Audience: It is highly suitable for jazz, commercial, and studio musicians, often used by those who need to switch between lead and ballad work.

• Performance: It is known for being very "free-blowing," making it comfortable to play for extended periods, though some users find it has a more moderate projection compared to heavier, non-jazz specific models.

• Legacy: The 6310Z is the predecessor to the current Yamaha Z (YTR-8310Z).

The Yamaha YTR-6310Z often comes in a gold epoxy lacquer finish and is supplied with a TR-11B4 mouthpiece. It is often described as an excellent, versatile choice for advanced players looking for a professional, lightweight instrument.