What instruments have valves?

There are several musical instruments that have valves. Here are some common examples:

1. Brass instruments:

- Trumpet

- French horn

- Trombone

- Tuba

2. Woodwind instruments:

- Flute (some variations, such as the alto flute)

- Piccolo (some variations)

- Clarinet (some variations, such as the bass clarinet)

- Bassoon

3. Other instruments:

- Accordion

- Harmonica

- Pipe organ

Each of these instruments uses valves to control the flow of air and produce different notes by altering the length of the instrument's tubing.