rx = """<!--\\ info\\ mp3\\ here\\ -->\\s+   # verbose mode; escape literal spaces
         (?:                             
            ([^<>]*)                     
            (?:<br\\ />)                  
         )?                              
         (?:                             
            ([^<>]*)                     
            (?:<br\\ />)                
         )?
         (?:                             
            (.*?)                        
            (?:\\s+</div>)                
         )"""
Conditional matching in regular expression