1 files changed, 14 insertions, 0 deletions
diff --git a/src/mml_composemusic_mcp/parser_pyxel.py b/src/mml_composemusic_mcp/parser_pyxel.py
index 336a55e..f75c169 100644
--- a/src/mml_composemusic_mcp/parser_pyxel.py
+++ b/src/mml_composemusic_mcp/parser_pyxel.py
@@ -76,6 +76,7 @@ class PyxelParser:
                 self._parse_track_header()
                 continue
             if self.current_channel is None:
+                self._warn_outside_track(token)
                 self.ctx.advance()
                 continue
             self._parse_statement()
@@ -102,6 +103,19 @@ class PyxelParser:
 
         return self.note_sequence, self.ctx.errors
 
+    def _warn_outside_track(self, token: Token) -> None:
+        if token.type == TokenType.EOF:
+            return
+        self.ctx.add_error(
+            code=ErrorCode.SYNTAX_OUTSIDE_TRACK,
+            line=token.line,
+            column=token.column,
+            message=f"'{token.raw}' はトラック外に書かれています。",
+            severity="warning",
+            hint="コマンドはトラックヘッダー（0:, 1:, 2:, 3:）の後に記述してください。",
+            context=self._context_line(token),
+        )
+
     def _parse_track_header(self) -> None:
         token = self.ctx.advance()
         ch = token.value