/usr/share/ams/instruments/ is in ams 2.1.1-1.1+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ams/instruments/README_hplp_instrument_pocketdial
/usr/share/ams/instruments/bass_presets.ams
/usr/share/ams/instruments/bass_presets_vcenv.ams
/usr/share/ams/instruments/example_presets.ams
/usr/share/ams/instruments/example_presets_3vco.ams
/usr/share/ams/instruments/hplp_instrument.ams
/usr/share/ams/instruments/hplp_instrument_pocketdial.ams
/usr/share/ams/instruments/miniams.ams
/usr/share/ams/instruments/miniams_pan.ams
/usr/share/ams/instruments/miniams_pan_drift.ams
/usr/share/ams/instruments/miniams_pan_lfo.ams
/usr/share/ams/instruments/miniams_vcenv2.ams
/usr/share/ams/instruments/organ.ams
/usr/share/ams/instruments/phaser_instrument.ams
/usr/share/ams/instruments/phaser_instrument_pan.ams
/usr/share/ams/instruments/phaser_instrument_pan_lfo.ams