Maker / Scenes / Every bounce adds a ball
Scene
Every bounce adds a ball
One ball becomes two, then four, then hundreds. Every bounce can add a new ball, and every hit plays the next note of the melody.
Make this videoWhat happens
It starts with a single ball. Every bounce spawns a new ball until there are 24 of them, and after that each bounce adds one 22% of the time, up to 200 in total. The circle has a gap that rotates and, after the first 8 seconds, slowly gets wider. Balls that fall through it are gone. The video ends when the last of the 200 has left, which takes between 27.4 to 34.8 seconds depending on the variation.
What you hear
With this many balls the hits would pile on top of each other, so hits closer together than 75 milliseconds share a note. The melody still runs fast, up to thirteen notes a second when the circle is crowded. Past 60 balls an octave doubles the melody, past 100 a low note joins in on every other hit, so the sound gets fuller as the circle gets crowded.
Songs that fit
In the Hall of the Mountain King is the default because it starts slow and ends at a gallop, which is exactly what this scene does to any tune. Short melodies loop many times here, so pick something that still sounds good on its fifth repeat.
Make your own
Open Every bounce adds a ball in the maker, pick a song or upload a MIDI file, and download the MP4. Variation 14 is the one in the preview above. The same variation number always gives the same video, so you can share a link and get identical results.
Other scenes
- Spinning hexagon: The spinning hexagon test with a gap in one wall. The spin speeds up with every bounce.
- Escape the rings: A ball bounces inside 22 spinning rings. Each ring has a gap, and the ring breaks once the ball gets through it.
- Galton board: 300 balls fall through 12 rows of pegs. Each bin has its own note, so you hear the bell curve fill in.
- Growing ball: The ball gets a little bigger on every bounce until it fills the circle.
- Shrinking ring: The ring gets 1.5% smaller every time it is hit, until the ball no longer fits.
- 100 strings: Each hit ties a string to the ring and speeds the ball up. The ring has to hold 100 of them.
- Color war: Two balls paint the ring in their own colour. Whoever owns more of it after 30 seconds wins.
- Ball race: Four balls, one small spinning exit. First one out wins.