It may be trite to go to wikipedia, but it has an entry on trombones that says [in part]
“The most common [… trombone …] is a non-transposing instrument pitched in B♭, […thus we get the 2B reference…] The once common E♭ …. alto trombone … is now enjoying a resurgence due to its lighter sonority”
It may be trite to go to wikipedia, but it has an entry on trombones that says [in part]
“The most common [… trombone …] is a non-transposing instrument pitched in B♭, […thus we get the 2B reference…] The once common E♭ …. alto trombone … is now enjoying a resurgence due to its lighter sonority”