Index: audio/Makefile
===================================================================
--- audio/Makefile
+++ audio/Makefile
@@ -408,6 +408,7 @@
     SUBDIR += libmpdclient
     SUBDIR += libmusicbrainz3
     SUBDIR += libmusicbrainz5
+    SUBDIR += libmusicxml
     SUBDIR += libnjb
     SUBDIR += libnoise
     SUBDIR += libogg
Index: audio/libmusicxml/Makefile
===================================================================
--- /dev/null
+++ audio/libmusicxml/Makefile
@@ -0,0 +1,42 @@
+# $FreeBSD$
+
+PORTNAME=	libmusicxml
+DISTVERSION=	3.11
+CATEGORIES=	audio
+
+MAINTAINER=	yuri@FreeBSD.org
+COMMENT=	Library and tools for the MusicXML format
+
+LICENSE=	MPL20
+LICENSE_FILE=	${WRKSRC}/license.txt
+
+USES=		cmake
+USE_GITHUB=	yes
+GH_ACCOUNT=	grame-cncm
+GH_TAGNAME=	91347ae
+USE_LDCONFIG=	yes
+CMAKE_SOURCE_PATH=	${WRKSRC}/build
+
+OPTIONS_DEFINE=	DOCS DOXYGEN
+PORTDOCS=	*
+
+DOXYGEN_BUILD_DEPENDS=	doxygen:devel/doxygen
+
+post-patch:
+	@${REINPLACE_CMD} -i '' -e ' \
+		s|LIBRARY DESTINATION /usr/lib|LIBRARY DESTINATION ${PREFIX}/lib|' \
+		${WRKSRC}/build/CMakeLists.txt
+
+post-build-DOCS-on:
+	@${MKDIR} ${STAGEDIR}${DOCSDIR}
+	${INSTALL_DATA} \
+		${WRKSRC}/doc/presentation/libmusicxml2.pdf \
+		${STAGEDIR}${DOCSDIR}
+
+post-install-DOXYGEN-on:
+	@${MKDIR} ${STAGEDIR}${DOCSDIR}
+	@cd ${WRKSRC}/doc && \
+		doxygen && \
+		${COPYTREE_SHARE} html latex ${STAGEDIR}${DOCSDIR}
+
+.include <bsd.port.mk>