/usr/ is in libsoundtouch-dev 1.8.0-1+deb8u1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/aclocal/
/usr/share/aclocal/soundtouch.m4
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/soundtouch.pc
/usr/include/
/usr/include/soundtouch/
/usr/include/soundtouch/soundtouch_config.h
/usr/include/soundtouch/BPMDetect.h
/usr/include/soundtouch/STTypes.h
/usr/include/soundtouch/SoundTouch.h
/usr/include/soundtouch/FIFOSamplePipe.h
/usr/include/soundtouch/FIFOSampleBuffer.h
/usr/share/doc/libsoundtouch-dev
/usr/lib/x86_64-linux-gnu/libSoundTouch.so