Re: [Harp-L] Why are some overblows easier than others?
- To: David Fairweather <dmf273@xxxxxxxxx>, "Harp-l@xxxxxxxxxx" <harp-l@xxxxxxxxxx>
- Subject: Re: [Harp-L] Why are some overblows easier than others?
- From: Winslow Yerxa <winslowyerxa@xxxxxxxxx>
- Date: Sun, 4 Jan 2015 03:11:12 +0000 (UTC)
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- Reply-to: Winslow Yerxa <winslowyerxa@xxxxxxxxx>
Some speculative possibilities:
1. Tuning the vocal cavity precisely enough to overcome both the blow reed's tendency to respond and the draw reed's tendency to just lie there may be more difficult for some pitches than for others. But then why is OB6 the most likely to respond through a range of several keys? And why is the dual reed bend in the same hole, which is only two semitones away, so much more reliable and easy to access? (This is partially - but only partially for this purpose - answered by the fact that it is in fact a dual reed bend.)
2. The pitch difference between the two reeds might play a part. But then why is OB1 so much more difficult that OB4 and OB4 more difficult than OB6, when they all involve a two-semitone difference?
3. For any given hole and breath, the reeds involved are the same length and width a(though differ in thickness and weight distribution) through a range of keys. Could this be the deciding factor?
From: David Fairweather <dmf273@xxxxxxxxx>
To: "Harp-l@xxxxxxxxxx" <harp-l@xxxxxxxxxx>
Sent: Saturday, January 3, 2015 3:19 PM
Subject: [Harp-L] Why are some overblows easier than others?
I think most people would agree that the #6 overblow is easier (at least
for beginners) than the #5, which is easier than the #4. Is there a
physical explanation for this? I just got a new Hohner Blues Harp in the
key of Ab and spent 1/2 hour trying to gap the #4 overblow. Never really
did get a good compromise that didn't make the #4 unbent blow reed choke up
too easily. I figured the unbent blow note was too important to risk it
choking up onstage and that I'd rarely use the #4 overblow, so I finally
gave up. But I'm wondering why? And does it matter what key harp
you're gapping? Was the Ab harps #4 reed just too low?
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