diff --git a/src/solo_turnier/tests/test_worker.py b/src/solo_turnier/tests/test_worker.py
index 8fcc828..e7237f8 100644
--- a/src/solo_turnier/tests/test_worker.py
+++ b/src/solo_turnier/tests/test_worker.py
@@ -310,3 +310,32 @@ def test_mergeHtmlData(mocker):
     }
 
     assert finalists == expectedFinalists
+
+@pytest.fixture(params=range(4))
+def fixture_getAllDancesInCompetition(request, mocker):
+    def mockCompetition(comp):
+        def mockUser():
+            return mocker.patch('solo_turnier.worker.ResultPerson')
+        def mockDances(dances):
+            def mockDance(name):
+                mock = mocker.patch('solo_turnier.worker.CompetitionResult')
+                mock.dance = name
+                return mock
+            return [mockDance(d) for d in dances]
+        return {mockUser(): mockDances(dances) for dances in comp}
+    
+    cases = (
+        ([['Samba']], ['Samba']),
+        ([['Samba', 'Rumba'], ['Cha Cha']], ['Samba', 'Cha Cha', 'Rumba']),
+        ([['Samba', 'Rumba'], ['Cha Cha', 'Tango', 'Langs. Walzer']], ['Samba', 'Cha Cha', 'Rumba', 'Langs. Walzer', 'Tango']),
+        ([['Cha Cha', 'Rumba', 'Jive'], ['Quickstep', 'Tango', 'Wiener Walzer', 'Langs. Walzer'], ['Slowfox', 'Langs. Walzer', 'Paso Doble', 'Samba']], ['Samba', 'Cha Cha', 'Rumba', 'Paso Doble', 'Jive', 'Langs. Walzer', 'Tango', 'Wiener Walzer', 'Slowfox', 'Quickstep'])
+    )
+    case = cases[request.param]
+    return (mockCompetition(case[0]), case[1])
+
+def test_getAllDancesInCompetitions(fixture_getAllDancesInCompetition):
+    print(fixture_getAllDancesInCompetition)
+    data = fixture_getAllDancesInCompetition[0]
+    dataWorker = worker.DataWorker()
+    ret = dataWorker.getAllDancesInCompetitions(data)
+    assert ret == fixture_getAllDancesInCompetition[1]
diff --git a/src/solo_turnier/worker.py b/src/solo_turnier/worker.py
index 9e9cbe4..118456e 100644
--- a/src/solo_turnier/worker.py
+++ b/src/solo_turnier/worker.py
@@ -219,3 +219,17 @@ class DataWorker:
                 if participant.name != person.name:
                     self.l.error(f'Names for {person} and participant in HTML import ({participant}) do not match. Please check carefully.')
                 competition.finalist = participant.finalist
+    
+    def getAllDancesInCompetitions(self, data:dict[ResultPerson, list[CompetitionResult]]) -> list[str]:
+        allDances = [
+            'Samba', 'Cha Cha', 'Rumba', 'Paso Doble', 'Jive',
+            'Langs. Walzer', 'Tango', 'Wiener Walzer', 'Slowfox', 'Quickstep'
+        ]
+        dancesPresent = {d: False for d in allDances}
+
+        for person in data:
+            print(person)
+            for competition in data[person]:
+                dancesPresent[competition.dance] = True
+
+        return [d for d in allDances if dancesPresent[d]]