Thanks for all your responses. In my original question, my concern was being able to tune the F21-A49 interval, which would require playing a 17th interval with the left hand while I tune A49. I figured I could tune A49 more accurately if I could match the beat rate of this interval with that of F21-fork. But now I'm finding that I'm pretty accurate when I put the fork in my mouth or under the keybed, as you all have suggested. Since I can hear both A49 and the fork simultaneously, I can concentrate on the beating and do fairly well. One additional comment: I find that banging the fork on my head gets it going pretty well. I'm not sure what the long term damage to my head might be. :) Charles Neuman
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