Studies find that music reduces your perception of how hard you are running by about 10 percent.

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"The message that goes out is that Belfast is a happening city, that Belfast is a music city and that changes the perception of Belfast, " he said.

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Like the neurological condition of synesthesia, an involuntary combination of the senses, Vayenas' music is meant to provide both an aural stimulus and a place where artistic fancy colors a listener's perception.

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