# Four-beat demo · text and visual alternative

Optional 2.4-second quiet tone cue for Arts Day 17: **tone – silence – tone – tone**. Four evenly spaced beats; each beat lasts 0.6 seconds. A raised or printed four-square grid can show `● ○ ● ●`. The recording is an original synthesised tone generated by `make_audio.py`; no instrument recording or third-party sample was used. Do not play loudly or demand listening. The teacher can show the grid, tap gently, describe it or let learners choose their own comfortable sound. The file demonstrates a pattern; it does **not** evidence a learner’s performance.