Voice

hum, and the brush follows your voice.

hum and a brush paints your tune as mountains on silk: height is pitch, loudness is the line

The brush moves right while you sound and its height is your pitch, on the scale the ear uses: every octave climbs the same distance. Loudness is the weight of the line, and silence lifts the brush. Each phrase becomes a peak and each pass a range. Nothing you sing is recorded or leaves the phone.

Concepts: pitch, harmonics.

An interactive you play with one thumb, on Wundr.