func playNote(freq float64) {
	f := int(freq)
	p, _ := audio.NewPlayerFromBytes(audioContext, pianoNoteSamples[f])
	p.Play()
}
func playNote(freq float64) {
	f := int(freq)
	p, _ := audio.NewPlayerFromBytes(audioContext, pianoNoteSamples[f])
	p.Play()
}
func playNote ( freq float64 ) { f := int ( freq ) p , _ := audio . NewPlayerFromBytes ( audioContext , pianoNoteSamples [ f ] ) p . Play ( ) }
// playNote plays piano sound with the given frequency.
playNote plays piano sound with the given frequency .