#### 3.15.10 Vaticana style contexts

The predefined `VaticanaVoiceContext` and `VaticanaStaffContext` can be used to easily engrave a piece of Gregorian Chant in the style of the Editio Vaticana. These contexts initialize all relevant context properties and grob properties to proper values. With these contexts, you can immediately go ahead entering the chant, as the following short excerpt demonstrates

>          \include "gregorian-init.ly"
>          \score {
>            <<
>              \context VaticanaVoice = "cantus" {
>                \override Score.BarNumber #'transparent = ##t
>                \notes {
>                  \[ c'\melisma c' \flexa a \]
>                  \[ a \flexa \deminutum g\melismaEnd \]
>                  f \divisioMinima
>                  \[ f\melisma \pes a c' c' \pes d'\melismaEnd \]
>                  c' \divisioMinima \break
>                  \[ c'\melisma c' \flexa a \]
>                  \[ a \flexa \deminutum g\melismaEnd \] f \divisioMinima
>                }
>              }
>              \lyricsto "cantus" \new Lyrics \lyrics {
>                San- ctus, San- ctus, San- ctus
>              }
>            >>
>          }

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