I'm pretty sure you don't need lyrics to create a good melody. You can hum and still make a nice sounding melody. 
        
                    
             
        
        
        
Answer:
When the play or film takes place in a time before zippers were invented
Explanation:
If the play is in a historical settings, zippers were probably not invented. So if you had a zipper on your costume it wouldn't make sense.
Hope this helps!
 
        
             
        
        
        
Answer: hey hope this is what you r looking for
Explanation: