[
    Song {
        metadata: Metadata {
            title: None,
            subtitles: [],
            artists: [],
            composers: [],
            lyricists: [],
            album: None,
            year: None,
            key: None,
            tempo: None,
            time: None,
            capo: None,
            sort_title: None,
            sort_artist: None,
            arrangers: [],
            copyright: None,
            duration: None,
            tags: [],
            custom: [],
        },
        lines: [],
    },
    Song {
        metadata: Metadata {
            title: Some(
                "Only Song",
            ),
            subtitles: [],
            artists: [],
            composers: [],
            lyricists: [],
            album: None,
            year: None,
            key: None,
            tempo: None,
            time: None,
            capo: None,
            sort_title: None,
            sort_artist: None,
            arrangers: [],
            copyright: None,
            duration: None,
            tags: [],
            custom: [],
        },
        lines: [
            Directive(
                Directive {
                    name: "title",
                    value: Some(
                        "Only Song",
                    ),
                    kind: Title,
                    selector: None,
                },
            ),
            Lyrics(
                LyricsLine {
                    segments: [
                        LyricsSegment {
                            chord: Some(
                                Chord {
                                    name: "C",
                                    detail: Some(
                                        ChordDetail {
                                            root: C,
                                            root_accidental: None,
                                            quality: Major,
                                            extension: None,
                                            bass_note: None,
                                        },
                                    ),
                                    display: None,
                                },
                            ),
                            text: "Hello world",
                            spans: [],
                        },
                    ],
                },
            ),
        ],
    },
]
