This document contains musical notation for an open chord study for bass trombone in major keys with 7th and 9th extensions. It consists of 34 lines of musical staff notation showing chord progressions using open chords and their extensions built on the notes Bb, F, Gb, and D. The document is authored by Duda Bass Trombone and provides contact information.

1. Estudo de Acordes Abertos
Maior com 7 e 9
Duda Bass Trombone
www.dudabasstrombone.blogspot.com Eduardo Guimarães
dudabtrb@gmail.com
          
            
Trombone Baixo
Bb, F, Gb, D
 
         
5
        
      

         
9
             
    
        
13
           
    
        
17
            
    
        
21
            
    
        
25
         
    
 

        
29
             
    
         
33
           
    
Duda Bass Trombone©DBT

2. 2 Estudo de Acordes Abertos
          
37

           
    

       
41
        
      

           
45

         
   

 
      
49

         
     

 
      
53
         
      
