Strictly Oompah: C. G. Conn Basses - A Complete List
Tubas at the 2007 NAMM Show - TubeNet
Conn 56J - TubaForum.net
The Tuba Exchange - Just received in a VERY NICE used Conn 56J CC tuba in satin silver. These are getting harder to find nowadays, especially in this condition! Take a look......
🎼 Testando Tuba Conn 56j - 🎶 Hino 66 - Cansado estás, vem a Jesus - YouTube