/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/ is in csoundqt-examples 0.9.4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/2xModulatorCarrierWithEnvelopes.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/FM2ModCar.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/FM3ModCar.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/FMMod2Car.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/FMModCarModCar.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/FMModModCar.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/FMModModCarEnvelopes.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/FMSynthesisVibratoToSideBands.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/ModulatorCarrier.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/ModulatorCarrierWithEnvelopes.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/PhaseModulationSynthesisCf.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/PhaseModulationSynthesisMCf.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/PhaseModulationSynthesisMMC.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/PhaseModulationSynthesisMMMC.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/PhaseModulationSynthesisMMM_C.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/PhaseModulationSynthesisMM_C.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/PhaseModulationSynthesisMfC.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/RingModulationAmplitudeModulation.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/SimpleModulatorCarrier.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/TX81Z.csd
/usr/share/qutecsound/Examples/McCurdy Collection/Modulation/foscil_foscili.csd