From the page: Glass that was waiting for a second chance

Idea 10

Glass shaker and mini percussion

Easy 30 min

Glass is an excellent acoustic material: it has low absorption and resonates with brilliance. Flasks tuned with different water levels are the ancestors of the "glass armonica" — an instrument of glasses that Mozart composed music for. A well-cut bottle glass with little seeds inside becomes a dry, crystalline shaker, with a timbre no plastic can imitate.

What you need

  • Cut bottles or glass jars with a firm lid
  • Seeds, rice, coarse sand or beads
  • Strong adhesive tape or hot glue to lock the lid
  • A balloon or thin leather to cover it (optional)

How to make it

  1. 1

    Choose jars of different sizes: the internal volume changes the body of the sound — smaller jars sound higher and drier.

  2. 2

    Put the material inside: rice gives a dry, medium sound; sand, soft and continuous; large seeds, deep and sparse. Test amounts before closing — the filling defines the timbre.

  3. 3

    Glue or lock the lid tightly with tape. Glass with a loose lid is an accident waiting to happen.

  4. 4

    For a tuned glass: put water at different levels in glasses and run a wet finger around the rim — each level gives a note.

Finishing touches

with four or five glasses of water at tested levels, you can play simple melodies. Wrap the jar in a cut balloon to cushion falls and create a deeper timbre, great for children.

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