-syn cluster lilyMatchGroup contains=lilyMatcher,lilyString,lilyComment,lilyStatement,lilyNumber,lilyEquation,lilySlur,lilySpecial,lilyNote,lilyKeyword,lilyArticulation,lilyReservedWord
+syn cluster lilyMatchGroup contains=lilyMatcher,lilyString,lilyComment,lilyStatement,lilyNumber,lilySlur,lilySpecial,lilyNote,lilyKeyword,lilyArticulation,lilyReservedWord,lilyScheme