SBass Trombone

The slide of the fourth valve is replaced by a pipe bend with 3 openings for blow tubes. The trombone can be played normally as a tenor trombone. If the fourth valve is activated, however, the 3 blow tubes extend. The heart serves as a support during pressure, but is simultaneously a whistle (borrowed from the Model Heart Whistle final).

For owners of a plastic trombone with fourth valve Classic Cantabile. For other models, the tube diameter may need to be adjusted.