The naming of the F as a "contrabass" trombone has to do with in what role it is meant to function, not just the key.

Before valves, in Germany a low F trombone was a "bass trombone" and was similar bore size to today's large bore tenor. It was a rare instrument, much more common was a Bb "bass" with no valve. To replace both an F valve was added to a Bb trombone. This was intended to be a bass trombone, but proved so versatile that it became a solo instrument, and was adopted by the whole section in some orchestras, so eventually a larger Bb/F instrument was made for the third player - today's bass trombone.


At the same time the bass trombone in England was pitched in G - very small bore. It remained for a long time, was not fully replaced by the large Bb/F instrument until the 1950s-60s.

Meanwhile, late 1800's Wagner has a "contrabass" trombone built, (Preatorius mentioned one, but it has to have been rare, and was certainly difficult to play) in BBb. This was probably played by tubists. It is a difficult instrument for trombonists to play.

The newer "contrabass" trombone in F is built to play those parts, is more of a playable instrument by trombonists, but is intended to be a "contrabass' trombone. It is very large bore compared to the old German bass trombone in F (even if it is in the same key) so there is nothing wrong with calling it a contrabass.

There is more to assigning these voice part names than just key. Otherwise Urbie Green and I play the same instrument.


Hey, I've got it! This low F trombone is about an octave below an alto trombone:

Let's call it a "CONTRA-ALTO TROMBONE!"


Raymond Horton
Bass Trombonist
Louisville Orchestra


Christopher Smith wrote:

On 7-Jun-07, at 4:35 PM, John Howell wrote:

At 3:17 PM -0400 6/7/07, Christopher Smith wrote:

And may I point out the ridiculous juxtaposition of the names "bass trombone" which was applied to an instrument with a G fundamental, whereas an instrument with an F fundamental suddenly becomes a "contrabass trombone".

Never heard an F bass called a contrabass, not when there are actual BBb contrabasses. That wold make an instrument in G, F, or Eb a bass, not a contrabass.


Yep, that's what you would think, but no, the F and Eb are contrabass, the G simply a bass. Don't complain to me, <I> didn't name 'em, I only play 'em! (well, not so much the G or Eb instruments). ...



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