What is a double bass's highest note?

The highest note on a double bass typically depends on the specific instrument and the player's skill, but it generally reaches around the C or D an octave above the open string notes. Many skilled players can produce higher notes through techniques like harmonics or advanced finger positioning. However, the practical range for most players tends to be limited to the higher register of the instrument, often around the G (the G above the staff) in standard repertoire.