soundtree

2. A device or sculpture shaped like a tree that produces sounds when touched or moved.

The playground's soundtree chimed softly whenever the wind blew.

3. A family of sounds or musical notes that grow from one main tone.

The composer built the whole song from a single soundtree of notes.

4. A fictional tree in stories whose leaves rustle like musical instruments.

In the tale, the soundtree sang a lullaby to help the hero sleep.