Leland wrote:By that point, for example, I usually took my part down yet another octave (or at least the notes that made sense to do so)
The parentheses hold the core of the problem!
Around 1975 an article in a brass related magazine or newsletter (I don't remember which one) issued a strong criticism against the editional practises of a major US brass ensemble edition's house.
The object of the criticism was the practise of making the bass lines of music for smaller ensembles like 4- and 5-tets multipurpose for euph, bassbone, bass tuba, and contrabass tuba.
This was done by writing the bass line in double octaves in the passages, which were to low for euph or too high for contrabass tuba. The problem was/is that neither score nor part indicated which was the original bass line as written by the composer.
And composers, the better ones at least, actually tend to be very particular about their bass lines. For centuries a work method of composers has been to write a particel (or Particell depending of language). Basically a sketch containing the melody and the bassline (which ideally also should have melodic qualities).
Even Mozart did so, even if he has not been reported to follow the "sleazy", at least lazy, practises of some renaissance and baroque composers, which wrote the particel only for their dance music, which were the pop tunes of that era. They then had students filling in the blanks in form of two or three inner voices. (I don't work from handwritten sources, but even in modern re-issues, I have met inner voices, which were extremely odd in the given style context, like wrong dissonance resolutions. Probably student work).
Back to the bass lines: their ranges were determined by their main carriers, the human voice and string instruments. The human bass normally is said to bottom out at F at the bottom of the bass stave. But I have met choir singers easily going down to C a fourth lower and still having a full sound. The bass viol went down to D and the cello goes down C.
Traditionally the contrabass stopped at E a sixth below the cello C. Modern string-makers have changed that, but still many orchestral bass lines don't go lower than E, so that the contrabass line could be executed a perfect octave below that.
Tuba players will see this in practical contexts, at least in brass bands. In music written exactly for that format, the Eb tuba is the main tuba. But when playing arrangements the situation is different.
There the true representant of the bass line often is the euph and/or the bassbone with the BBb tuba playing the contrabass line a perfect octave below. The poor Eb tubists are left with the task to jump up and down between the contrabass and bass lines. Very frustrating because the melodic aspects of the bass line are compromised. (And yes: I have been there on all the parts mentioned, plus a few more).
Can these compromises be avoided? Hardly!
When I wrote the tuba part for my arrangement of Four dances from Læsø, I did it with a US tuba friend in mind. He is known from this forum. He is well bestowed with fine tubas in BBb, CC, and Eb. The part was written with his contrabasses in mind. No regrets about that. But it has made it hard to move the setting to other ensemble formats, because the bass instruments cannot cover that range:
http://launch.groups.yahoo.com/group/Yo ... Dances%20/
Back to our original poster: You did the right thing in taking the bass line an octave down on your BBb!
But then I have to touch the topic of brass quintets playing 4 part hymns. Rumours have hit my ears, that it is a general practise to have the trumpets and the horn playing the SAT lines with the trombone and the tuba doubling the bass line in octaves.
That is very bad in my ears for several reasons:
We love the bass line, but it is only the secondmost important part, which should not be the most powerful one.
The horn is not the optimal tenor of the brass 5-tet. The trombone is. And the horn is a very good alto.
The cissy, when it comes to stamina in a brass 5-tet, is the first trumpet. Let the 2nd trumpet take some of the workload. If the horn complains fatigue, then sprinkle in a few verses with 2 trumpets, trombone, and tuba representing the SATB lines. In most church hymns the bass and contrabass representations of the B-line are equally valid.
Which takes me back to the Leland quote.
It takes some musicianship to juggle between the bass and contrabass lines in a musical fashion. In general octave shifts should only happen at the breath marks after each phrase. And if the note before the breath mark calls for a resolution, then that shall be respected.
A very common tuba cliché is to take the last note in a hymn an octave down (changing an upward fourth to a downward fifth. Most often fine! But if the last move of the melody also is a downward fifth, you introduce a breach of one of the most basic hymn rules: don't create parallels, especially not between the outer parts!
Long? Of course! But short even for a crash course.
Klaus