I had Astra make a digital violin with a physics engine. It has to make music by pulling the bow across the string and forming the finger positioning for arpeggios, the same way a human would. If the motion is wrong, it sounds badly (trust me I tried it). It played Bach.

This story is from 2026-09-12. It is preserved in the archive; the latest stories are on the live feed.

It chose Bach’s Prelude, BWV 1007. Prelude seems an apt choice, given recent news

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Timeline · 3 reports

1. 2026-09-13 04:48 · r/ChatGPT
   I keep having Astra improve its violin physics engine. Now does proper chords and vibrato. This is “A Light Left On”, an original song by Astra
2. 2026-09-13 00:23 · r/agi
   I had Astra make a digital violin with a physics engine. It has to make music by pulling the bow across the string and forming the finger positioning for arpeggios. If the motion is wrong, it sounds badly. Then I had it compose an original song. This performance is “Room for Music” by Astra
3. 2026-09-12 23:36 · r/artificial
   I had Astra make a digital violin with a physics engine. It has to make music by pulling the bow across the string and forming the finger positioning for arpeggios, the same way a human would. If the motion is wrong, it sounds badly (trust me I tried it). It played Bach.