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The amateur botanist Dorothy L. Retallack, in 1973, claimed to have found that music can have an effect on plants. "Positive" music (that produces joy or contentment) supposedly made plants flourish and even "reach" for, or grow toward, such music. Negative music (that produces frustration, restlessness, or especially anger and rage) supposedly caused plants to "recoil" (grow away) from the music, and prolonged or repeated exposure debilitates and eventually killed plants, or so she said.<ref>Retallack, Dorothy L. ''The Sound of Music and Plants''. Devorss and Company, June 1973, 96 pp., paperback. ISBN 0875161707</ref><ref>[http://www.dovesong.com/positive_music/ About Positive and Negative Music] from the Dovesong Foundation</ref>

The amateur botanist Dorothy L. Retallack, in 1973, claimed to have found that music can have an effect on plants. "Positive" music (that produces joy or contentment) supposedly made plants flourish and even "reach" for, or grow toward, such music. Negative music (that produces frustration, restlessness, or especially anger and rage) supposedly caused plants to "recoil" (grow away) from the music, and prolonged or repeated exposure debilitates and eventually killed plants, or so she said.<ref>Retallack, Dorothy L. ''The Sound of Music and Plants''. Devorss and Company, June 1973, 96 pp., paperback. ISBN 0875161707</ref><ref>[http://www.dovesong.com/positive_music/ About Positive and Negative Music] from the Dovesong Foundation</ref>

No botanist has ever reproduced Retallack's claimed results. But the effects on animals and humans are far better documented and much more profound than any effect on plants that Retallack ever claimed. That animals, and especially [[dog]]s and [[cat]]s, recoil in horror from the sound of a poorly trained voice, is proverbial (and in fact the animals might be reacting to a sound that is not merely grating but acutely and physically painful to their ears). The Dovesong Foundation has found evidence for musical preferences by cattle<ref>[http://www.dovesong.com/positive_music/archives/basement/Cows%20and%20Classical%20Music.asp Cows Prefer Classical Music]</ref> and cetaceans.<ref>[http://www.dovesong.com/positive_music/archives/basement/Steinhart_Dolphins.asp Dolphins Don't Like Rock] (The article refers to the classic [[dolphin]] (family [[Cetacea]]), aka "porpoise," not the fish of that name.)</ref>

No botanist has ever reproduced Retallack's claimed results. But the effects on animals and humans are far better documented and much more profound than any effect on plants that Retallack ever claimed. That animals, and especially [[dog]]s and [[cat]]s, recoil in horror from the sound of a poorly trained voice, is proverbial (and in fact the animals might be reacting to a sound that is not merely grating but acutely and physically painful to their ears). The Dovesong Foundation has found evidence for musical preferences by cattle<ref>[http://www.dovesong.com/positive_music/archives/basement/Cows%20and%20Classical%20Music.asp Cows Prefer Classical Music]</ref> and [[cetacea]]ns.<ref>[http://www.dovesong.com/positive_music/archives/basement/Steinhart_Dolphins.asp Dolphins Don't Like Rock] (The article refers to the classic [[dolphin]] (family [[Cetacea]]), aka "porpoise," not the fish of that name.)</ref>

Music has also had a profound and well-documented effect in human history.  The history of warfare includes a rich history of martial music. More recently, music has now found a use in the healing of negative emotional states and even as an aid to the healing of physical disabilities.<ref>[http://www.musictherapy.org/ The American Music Therapy Association]</ref>

Music has also had a profound and well-documented effect in human history.  The history of warfare includes a rich history of martial music. More recently, music has now found a use in the healing of negative emotional states and even as an aid to the healing of physical disabilities.<ref>[http://www.musictherapy.org/ The American Music Therapy Association]</ref>