diff --git a/src/chordpro/constants.py b/src/chordpro/constants.py
index 8e7fc39..633a649 100644
--- a/src/chordpro/constants.py
+++ b/src/chordpro/constants.py
@@ -34,3 +34,4 @@ START_OF = re.compile(r'\{start_of_(' + '|'.join(KNOWN_VERSE_TYPES) + r')(: *(.*
 END_OF = re.compile(r'\{end_of_(' + '|'.join(KNOWN_VERSE_TYPES) + r')\}')
 CHORUS_MARKER = re.compile(r'\{chorus(: *(.*?))?\}')
 CHORD_WORD = re.compile(r'(.*?)\[(.*?)\]')
+CHORD = re.compile(r'\[(.*?)\]')