2016-03-25 16:47:20 -07:00
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# Change Tempo By
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Change the tempo by the specified amount
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## Simulator
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Simulation of this function is available in many, but not all browsers.
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```sig
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music.changeTempoBy(20)
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```
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### Parameters
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2016-04-13 08:27:45 -07:00
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* `bpm` : [Number](/reference/types/number) - change the tempo by beats per minute
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2016-03-25 16:47:20 -07:00
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### See also
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2016-04-13 08:27:45 -07:00
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[play tone](/reference/music/play-tone), [ring tone](/reference/music/ring-tone)
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2016-03-25 16:47:20 -07:00
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