---------------------- multipart/alternative attachment Don: On your trombone, the open pitches are from the harmonic ladder. The low B-flat is what it is, the F above that is a perfect 5th. The D that comes from the 5th harmonic is not an ET D, but rather a 5/4 ratio 3rd. Of course on the trombone you have the widest latitude for matching the correct pitch of your ensemble, but the open (first position) notes are not tempered at all. dave __________________________________________ David M. Porritt, RPT Meadows School of the Arts Southern Methodist University Dallas, TX 75275 Dave, Theoretically, yes. (I'm another former trombonist and music theorist.) What you say regarding the instrument's 1st position is true IF the designer of the instrument has been able to get the bore/length/ratio of cylindrical to conical bore/bell taper/lead-pipe design parameters to match up exactly so that the player produces a true harmonic series on that Bb.....uh-oh, the player and his/her mouthpiece, and his/her technique can throw all of those off, as well! Unfretted string instruments and trombones are the easiest (!) instruments to play "in tune" with others....but it still takes years of training and practice, and the familiarity with one's own instrument that allows it to be an extension of one's self to make that happen. An exact science it is not--from any perspective you choose to use as your viewing point. Regards, Stan Ryberg Barrington IL jstan40@sbcglobal.net ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/54/81/ce/44/attachment.htm ---------------------- multipart/alternative attachment--
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