NoteContents: [TiedNote | CuedNote | TiedGraceNote | CuedGraceNote, Instrument[], Footnote | null, Level | null, Voice | null, Type | null, Dot[], Accidental | null, TimeModification | null, Stem | null, Notehead | null, NoteheadText | null, Staff | null, [] | [Beam] | [Beam, Beam] | [Beam, Beam, Beam] | [Beam, Beam, Beam, Beam] | [Beam, Beam, Beam, Beam, Beam] | [Beam, Beam, Beam, Beam, Beam, Beam] | [Beam, Beam, Beam, Beam, Beam, Beam, Beam] | [Beam, Beam, Beam, Beam, Beam, Beam, Beam, Beam], Notations[], Lyric[], Play | null, Listen | null]