Settings for a vibraphone (vibes) patch.
Not to be confused with the xylophone that's played on wooden bars, the vibraphone, or vibes, is played on metallic (aluminum) bars.
This patch uses 2 triangle wave VCOs, the 2nd VCO pitched much higher than the 1st one. The envelope is all decay and release, there's neither attack nor sustain.
There is a cord from a triangle LFO wave to the amplitude (VCA IN). That gives a tiny bit of tremolo effect.