Trombone: The Orchestra Up Close — Orchestre Métropolitain

“Part of the brass family, the trombone was originally played in religious settings before becoming part of the orchestra. While there are various kinds of trombones, with different registers and mechanisms, there are generally two tenor trombones and one bass trombone in an orchestra.”

https://souslaloupe.orchestremetropolitain.com/en/instruments/trombones