Posted by js on July 17, 2003 at 23:02:01:
In Reply to: Re: Re: Trilling Existence posted by Mr. X on July 17, 2003 at 22:02:23:
If it is a FOUR-valve EEb tuba, 
your Eb-F trill will work with (open) Eb to (alternate fingering - 4th valve) F.
Of course, the Db to Eb trill and other trills are quite easy...
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You should get my sometimes-student, Austin Howle (in Oxford, Mississippi) to email you his recording of this that he did with the Mississippi All-State Band a year ago.  It's the best rendition of this that I've ever heard.  (I think he played it on a 3-valve.)