The Category A Cappella Groups is a subset of Singing Groups and Choirs.  
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The Category Ballet Companies is a subset of Opera and Ballet Performances.    
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The Category Barbershop Choruses is a subset of Singing Groups and Choirs.  
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The Category Big Bands is a subset of Orchestras and Bands.    
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The Category Brass and Silver Bands is a subset of Orchestras and Bands.    
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The Category Brass Ensembles is a subset of Concert Music Ensembles.    
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The Category Cathedral and Church Choirs is a subset of Singing Groups and Choirs.  
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The Category Chamber Choirs is a subset of Singing Groups and Choirs.   VISIT the Website LINK for ...
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The Category Chamber Duos is a subset of Chamber Music Recitalists.  
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The Category Chamber Ensembles is a subset of Concert Music Ensembles.  
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The Category Chamber Orchestras is a subset of Orchestras and Bands.    
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The Category Chamber Quartets is a subset of Chamber Music Recitalists.  
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The Category Chamber Quintets is a subset of Chamber Music Recitalists.  
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The Category Chamber Trios is a subset of Chamber Music Recitalists.  
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The Category Choral Societies is a subset of Singing Groups and Choirs.    
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The Category Clarinet Ensembles is a subset of Concert Music Ensembles.  
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The Category Community Choirs is a subset of Singing Groups and Choirs.  
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The Category Community Orchestras and Bands is a subset of Orchestras and Bands.    
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The Category Concert and Wind Bands is a subset of Orchestras and Bands.  
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The Category Contemporary Ensembles is a subset of Concert Music Ensembles.  
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The Category Early Music Ensembles is a subset of Concert Music Ensembles.    
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The Category Flute Ensembles is a subset of Concert Music Ensembles.    
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The Category Folk Music Ensembles is a subset of Concert Music Ensembles.    
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The Category Gaelic Choirs is a subset of Singing Groups and Choirs.  
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The Category Gospel Choirs is a subset of Singing Groups and Choirs.  
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The Category Guitar Ensembles is a subset of Concert Music Ensembles.    
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The Category Handbell Ringers is a subset of Concert Music Ensembles.  
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The Category Jazz Choirs is  a subset of Singing Groups and Choirs.  
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The Category Ladies Choirs is a subset of Singing Groups and Choirs.  
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The Category LGBT+ Choirs is a subset of Singing Groups and Choirs.  
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The Category Light Orchestras is a subset of Orchestras and Bands.    
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The Category Male Voice Choirs is a subset of Singing Groups and Choirs.    
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The Category Military Bands is a subset of  Orchestras and Bands .   
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The Category Opera Companies is a subset of Opera and Ballet Performances.    
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The Category Operatic and Dramatic Societies is a subset of Opera and Ballet Performances.   VISIT ...
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The Category Percussion Ensembles is a subset of Concert Music Ensembles.    
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The Category Piano Trios is a subset of Chamber Trios.  
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The Category Pipe Bands is a subset of Orchestras and Bands.    
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The Category Recorder Ensembles is a subset of Concert Music Ensembles.  
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The Category Small Vocal Groups is a subset of Singing Groups and Choirs.   
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The Category String Ensembles is a subset of Concert Music Ensembles.    
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The Category String Quartets is a subset of Chamber Quartets.  
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The Category Symphony Orchestras is a subset of Orchestras and Bands.    
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The Category Traditional Music Choirs is a subset of Singing Groups and Choirs.  
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The Category Traditional Orchestras and Bands is a subset of Orchestras and Bands.   
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The Category West Gallery Quires is a subset of Singing Groups and Choirs.    
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The Category Young Persons Concert Music Ensembles is a subset of Concert Music Ensembles.  
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The Category Young Persons Musical Theatre is a subset of Operatic and Dramatic Societies.    
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The Category Young Persons Orchestras and Bands is a subset of Orchestras and Bands.    
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The Category Young Persons Singing Groups and Choirs is a subset of Singing Groups and Choirs.   
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