### Armonici su corde a vuoto in intavolatura

Questo frammento mostra come scrivere armonici su corde a vuoto.

```openStringHarmonics = {
\textSpannerDown
\override TextSpanner.dash-fraction = 0.3
\override TextSpanner.dash-period = 1

%first harmonic
\override TextSpanner.bound-details.left.text =
\markup\small "1st harm. "
\harmonicByFret 12 e,2\6\startTextSpan
\harmonicByRatio #1/2 e,\6\stopTextSpan

%second harmonic
\override TextSpanner.bound-details.left.text =
\markup\small "2nd harm. "
\harmonicByFret 7 e,\6\startTextSpan
\harmonicByRatio #1/3 e,\6
\harmonicByFret 19 e,\6
\harmonicByRatio #2/3 e,\6\stopTextSpan
%\harmonicByFret 19 < e,\6 a,\5 d\4 >
%\harmonicByRatio #2/3 < e,\6 a,\5 d\4 >

%third harmonic
\override TextSpanner.bound-details.left.text =
\markup\small "3rd harm. "
\harmonicByFret 5 e,\6\startTextSpan
\harmonicByRatio #1/4 e,\6
\harmonicByFret 24 e,\6
\harmonicByRatio #3/4 e,\6\stopTextSpan
\break

%fourth harmonic
\override TextSpanner.bound-details.left.text =
\markup\small "4th harm. "
\harmonicByFret 4 e,\6\startTextSpan
\harmonicByRatio #1/5 e,\6
\harmonicByFret 9 e,\6
\harmonicByRatio #2/5 e,\6
\harmonicByFret 16 e,\6
\harmonicByRatio #3/5 e,\6\stopTextSpan

%fifth harmonic
\override TextSpanner.bound-details.left.text =
\markup\small "5th harm. "
\harmonicByFret 3 e,\6\startTextSpan
\harmonicByRatio #1/6 e,\6\stopTextSpan
\break

%sixth harmonic
\override TextSpanner.bound-details.left.text =
\markup\small "6th harm. "
\harmonicByFret 2.7 e,\6\startTextSpan
\harmonicByRatio #1/7 e,\6\stopTextSpan

%seventh harmonic
\override TextSpanner.bound-details.left.text =
\markup\small "7th harm. "
\harmonicByFret 2.3 e,\6\startTextSpan
\harmonicByRatio #1/8 e,\6\stopTextSpan

%eighth harmonic
\override TextSpanner.bound-details.left.text =
\markup\small "8th harm. "
\harmonicByFret 2 e,\6\startTextSpan
\harmonicByRatio #1/9 e,\6\stopTextSpan
}

\score {
<<
\new Staff
\with { \omit StringNumber } {
\new Voice {
\clef "treble_8"
\openStringHarmonics
}
}
\new TabStaff {
\new TabVoice {
\openStringHarmonics
}
}
>>
}

\paper { tagline = ##f }
```