Optimises the airflow during playing- Helps to activate breathing, coordinate air/finger/tongue, release tension, practice mentally and find a free-blowing feeling- Ideal for the "Song and Wind" method- Individually adjustable air resistance- Special hole for optimal feedback of air intensity- Hygienic silicone tube as a connection to the mouth- Alternatively usable with a strap to hang around the neck- Suitable for tenor trombone with shaft size Large (ca.12.6 mm)- Usage: Attached to the instrument instead of the mouthpiece and put something in the mouth so that the air only flows into the instrument, introduce the desired melody and "play" it under constant air flow - the air noise of the flowStick gives feedback about the air quality- Incl. tape, spare tube and flowBox