Kimball Trombone
About
About submenu
Bio
In Performance
Trombone History
Trombone History submenu
Trombone Timeline
15th Century
16th Century
17th Century
18th Century
19th Century
20th Century
Alto Trombone
Alto Timeline
Extant Altos
Alto & Voice
Alto Quotes
Alto in Treatises
Praetorius on Alto
Position Chart
Learning the Alto
Brass Timeline
Pre-History
13th Century
14th Century
15th Century
16th Century
17th Century
18th Century
19th Century
20th Century
Reference
Iconography
Early Literature
Trombone Bibliography
Alto Bibliography
Breathing
Breathing submenu
Respiratory Training
10 Ways to Improve Breathing
BYU Students
BYU Students submenu
Fall 2026 Ensemble Auditions
FAQ for Trombone Majors
Solo List
Excerpt List
Retailers & Services
Writing Suggestions
Blog
Contact
Menu
1939
Pitch standard of a’=440 is adopted as international pitch standard.