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In each chamber of a standard single reed diatonic harmonica, there are two reeds. During "normal" play, one of them responds to positive pressure (blowing) and one of them responds to negative pressure (drawing). However, the two reeds can be made to interact in very interesting (and useful) ways, the most well-known being the typical blues-style bend. In this, the higher pitched reed of the pair can be lowered in pitch to somewhere just above the lower pitched reed in the same hole. In the case of a draw bend, when the note is bent to its lowest pitch, most of the sound is coming from the blow reed, vibrating at slightly higher than its normal rate. In the case of a blow note being bent as far as possible, most of the sound is coming from the draw reed. This can be verified by playing the harp without covers and blocking the reeds with the fingertips. The reverse can also be made to happen, which results in an overblow or overdraw. In the case of the former, by blowing in a particular manner, the blow reed can be made to "stall" and the draw reed vibrate at a higher pitch. With overdraws, the draw reed is stalled and the blow reed is made to vibrate at a higher pitch. By use of this technique in addition to note bending, a complete chromatic scale can be played on the humble diatonic instrument. However, the challenge to the player is to make this all happen in a controlled and musical way - easier said than done.

One of the methods used to teach overblows is to play the harp without covers and stop the appropriate reed using the fingertips, then adjust your embouchure until you can get the opposite reed to sound. For example, when learning to play the overblow in hole 4, you would stop the 4 blow reed with your finger, or to play a hole 7 overdraw, you would stop the 7 draw reed. In fact, as well as helping to learn the technique, stopping the reeds with your fingers allows even an experienced player to do things that are difficult to do whilst playing the harp normally - bending the overblows upwards in pitch, adding vibrato, etc.

Gore filled a Westin Crown Center ballroom with a 90-minute presentation, using photos and videos to illustrate a litany of floods, wildfires, torrential rains, droughts, dust storms, rising sea levels and increasing world temperatures.

They had never seen anything like this in Manitou Springs,”

“Think about that,”

(Words & music by Peterson - Bergantine) Evening shadows make me blue When each weary day is through How I long to be with you My happiness Every day I reminesce Dreaming of your tender kiss Always thinking how I miss My happiness A million years it seems Have gone by since we shared our dreams But I'll hold you again There'll be no blue memories then Whether skies are grey or blue Any place on earth will do Just as long as I'm with you My happiness A million years it seems Have gone by since we shared our dreams But I'll hold you again There'll be no blue memories then Whether skies are grey or blue Any place on earth will do Just as long as I'm with you My happiness

DarwinTunes

The organic world – animals, plants, viruses – is the product of Darwinian evolution by natural selection. Natural selection expresses the idea that organisms (more accurately their genes) vary and that variability has consequences. Some variants are bad and go extinct; others are good and do exceptionally well. This process, repeated for two billion years, has given us the splendours of life on earth.

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