| 
 
     
       |   | 
            
              | 
In 'John Blackwell: Technique, Grooving and Showmanship: Bonus Material,' master drummer John Blackwell presents advanced drumming techniques, emphasizing groove and stage presence while providing valuable insights into enhancing musical performance.
                 |  |  |  |  
        |  |  |  
        |  |  |  
        | 
 |  
        |  |  |  |