/usr/ is in libechonest-dev 2.3.1-0.3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/libechonest-dev/
/usr/share/doc/libechonest-dev/copyright
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libechonest.pc
/usr/include/
/usr/include/echonest/
/usr/include/echonest/echonest_export.h
/usr/include/echonest/Playlist.h
/usr/include/echonest/CatalogArtist.h
/usr/include/echonest/CommonTypes.h
/usr/include/echonest/Track.h
/usr/include/echonest/Catalog.h
/usr/include/echonest/CatalogItem.h
/usr/include/echonest/Artist.h
/usr/include/echonest/Genre.h
/usr/include/echonest/CatalogUpdateEntry.h
/usr/include/echonest/CatalogSong.h
/usr/include/echonest/ArtistTypes.h
/usr/include/echonest/TypeInformation.h
/usr/include/echonest/AudioSummary.h
/usr/include/echonest/Song.h
/usr/include/echonest/Util.h
/usr/include/echonest/Config.h
/usr/share/doc/libechonest-dev/changelog.Debian.gz
/usr/lib/x86_64-linux-gnu/libechonest.so