diff --git a/src/tja2fumen/parsers.py b/src/tja2fumen/parsers.py
index b2fd53a..d8714e8 100644
--- a/src/tja2fumen/parsers.py
+++ b/src/tja2fumen/parsers.py
@@ -234,12 +234,16 @@ def parse_tja_course_data(data: List[str]) -> Dict[str, List[TJAMeasure]]:
                 parsed_branches[current_branch][idx_m].notes += note_data[:-1]
                 parsed_branches[current_branch].append(TJAMeasure())
                 # Repeat steps for other branches if we only have info for a single branch
+                # (Note: We replace balloons with drumrolls to avoid reading from BALLOON:
+                #        field extra times)
                 if add_dummy_notes_to_other_branches:
                     other_branches = list(set(BRANCH_NAMES) - set([current_branch]))
                     for branch_name in other_branches:
                         check_branch_length(parsed_branches, branch_name,
                                             expected_len=idx_m+1)
                         dummy_data = note_data[:-1]
+                        dummy_data = dummy_data.replace('7', '5')  # Balloon -> Drumroll
+                        dummy_data = dummy_data.replace('9', '5')  # Kusudama -> Drumroll
                         parsed_branches[branch_name][idx_m].notes += dummy_data
                         parsed_branches[branch_name].append(TJAMeasure())
                 idx_m += 1
@@ -247,10 +251,14 @@ def parse_tja_course_data(data: List[str]) -> Dict[str, List[TJAMeasure]]:
             else:
                 parsed_branches[current_branch][idx_m].notes += note_data
                 # Repeat steps for other branches if we only have info for a single branch
+                # (Note: We replace balloons with drumrolls to avoid reading from BALLOON:
+                #        field extra times)
                 if add_dummy_notes_to_other_branches:
                     other_branches = list(set(BRANCH_NAMES) - set([current_branch]))
                     for branch_name in other_branches:
                         dummy_data = note_data
+                        dummy_data = dummy_data.replace('7', '5')  # Balloon -> Drumroll
+                        dummy_data = dummy_data.replace('9', '5')  # Kusudama -> Drumroll
                         parsed_branches[branch_name][idx_m].notes += dummy_data
 
         # 2. Parse measure commands that produce an "event"
diff --git a/testing/test_conversion.py b/testing/test_conversion.py
index da845d1..89f6ec6 100644
--- a/testing/test_conversion.py
+++ b/testing/test_conversion.py
@@ -149,8 +149,17 @@ def test_converted_tja_vs_cached_fumen(id_song, tmp_path, entry_point):
                 for i_note in range(max([co_branch.length, ca_branch.length])):
                     co_note = co_branch.notes[i_note]
                     ca_note = ca_branch.notes[i_note]
-                    check(co_note, ca_note, 'note_type', i_measure,
-                          i_branch, i_note, func=normalize_type)
+                    # Check for "balloon deduplication" workaround.
+                    # This is a hack I specifically added to account
+                    # for songs where a balloon note occurs on the
+                    # normal branch and gets copied to other branches.
+                    # See PR #80 for more information.
+                    if (ca_note.note_type in ['Balloon', 'Kusudama']
+                            and co_note.note_type == 'Drumroll'):
+                        pass
+                    else:
+                        check(co_note, ca_note, 'note_type', i_measure,
+                              i_branch, i_note, func=normalize_type)
                     check(co_note, ca_note, 'pos', i_measure,
                           i_branch, i_note, abv=0.1)
                     # NB: Drumroll duration doesn't always end exactly on a
@@ -167,8 +176,16 @@ def test_converted_tja_vs_cached_fumen(id_song, tmp_path, entry_point):
                     except AssertionError:
                         pass
                     if ca_note.note_type in ["Balloon", "Kusudama"]:
-                        check(co_note, ca_note, 'hits', i_measure,
-                              i_branch, i_note)
+                        # Check for "balloon deduplication" workaround.
+                        # This is a hack I specifically added to account
+                        # for songs where a balloon note occurs on the
+                        # normal branch and gets copied to other branches.
+                        # See PR #80 for more information.
+                        if co_note.note_type == 'Drumroll':
+                            pass
+                        else:
+                            check(co_note, ca_note, 'hits', i_measure,
+                                  i_branch, i_note)
                     else:
                         check(co_note, ca_note, 'score_init', i_measure,
                               i_branch, i_note)