Trombone New Book Focuses on Bordogni Etudes for Contrabass Trombone February 24, 2021 Jeremy Smith 2084 Views bass trombone, Bordogni Etudes, Contrabass Trombone, Javier Colomer, Trombone Share this:Click to share on Facebook (Opens in new window)Click to share on X (Opens in new window)Click to share on Threads (Opens in new window)