The audio begins with the distinct sound of a trombone warming up, its rich tones filling the atmosphere. Soon, you can hear the trombonist making preparations to transform the instrument, signaling the start of the main event: the stretching of the trombone. There’s a brief pause, followed by a slight, resonant clicking sound, signifying the loosening of the trombone's slide lock. The trombonist then begins to extend the trombone's slide gradually. The precise, sliding motion creates a unique reverberation, a sound that only a trombone being extended can produce. As the trombone extends, the pitch of the instrument deepens, creating a musical suspense. The stretch is slow and deliberate, allowing listeners to fully experience the transformation of the instrument. Finally, after a moment of anticipation, the trombone reaches its full extension of 18 inches. The trombonist plays a deep, resonant note, a testament to the successful transformation. The note echoes