tuba4sissies wrote:Or is it better to play 1 contra bass and 1 bass tuba?
I think that if you asked this question 30 or 40 years ago, the answers would usually be a 4/4 CC tuba in the U.S., a Besson Eb in the UK (and much of its former empire), and a large F tuba in most of Europe. These differences stem from traditional differences, and also from regional sound concepts.
Sound concepts have merged since then, and orchestras now play a wider repertoire. Also, orchestras are trying to increase their sound output, I think to compete with modern life's higher ambient noise and with amplified music. Thus, I think it's becoming standard practice for orchestra pros to have more than one instrument. In Germany, that would be F and BBb, in the UK it would Eb and CC, and in most other places it would be F and CC. Exceptions abound, of course.
I find it convenient to own five instruments: A big contrabass, a small contrabass, a big bass, a small bass, and a euphonium. Even as a community-band amateur, I like having those choices available (and I'm extremely fortunate to have the option). I use the big contrabass for band, the small contrabass for standing band gigs, such as in the summer, and for playing fourth part in a tuba quartet. I use the the big bass tuba for when the band part calls for a bass tuba concept, such as transcriptions of Berlioz or parts that park themselves in the upper register. The small bass tuba works well for chamber music. And then I have a euphonium, because when I need it nothing else will do. Of course I would do fine with fewer instruments and if the circumstances dictated it I would do so, and be happy to have the opportunity to play at all.
But you asked about orchestra pros. I know orchestra pros who use only two instruments, but I don't think I can recall anyone who is still playing in a professional orchestra who has only one.
Rick "who thinks one is enough until about halfway through undergraduate music school" Denney