The Nbbrecords is one of the more interesting website related to classic doublebass.
But one of the most incredible thing is the OPERA OMNIA.
Link to the site where it's written "Opera Omnia".
THE DOUBLE BASS BLOG by Vito Liuzzi
"We all must thank you, Dear Vito, for your tireless work for all of us bassists!" You are doing so much for your
colleagues and your art.
PIERMARIO MURELLI - "Nuova didattica per contrabbasso " Ed.