The number of keys on a xylophone can vary depending on the type and size of the instrument:
- Smaller xylophones (e.g., beginner or toy versions): Typically have around 12 to 25 keys, covering 1 to 2 octaves.
- Concert xylophones (professional level): Usually have 42 to 48 keys, spanning 3.5 to 4 octaves.
Each key corresponds to a specific pitch, and they are often arranged similarly to the keys of a piano.