Tonal instrument

In NetHack, tonal instruments are instruments which can be used to play the passtune when a player answers "n" at the "Improvise" prompt.

The tonal instruments are:

• wooden flute
• magic flute
• tooled horn
• frost horn
• fire horn
• wooden harp
• magic harp
• bugle

If you are stunned, confused, or hallucinating, you will improvise automatically with any tonal instrument, making it impossible to play the passtune.