/?song=silent-night&ref=song-page

{
    "song": {
        "slug": "silent-night",
        "title": "Silent Night",
        "description": "The gentle carol, for 2 to 4 singers: the soprano sings the melody, the alto a third below most of the way, the bass holds the roots on \"oo\", and the tenor fills the chord. Slow and singable.",
        "difficulty": "beginner",
        "genre": [
            "carol",
            "christmas"
        ],
        "parts": [
            {
                "key": "soprano",
                "name": "Soprano",
                "low": "C4",
                "high": "F5"
            },
            {
                "key": "alto",
                "name": "Alto",
                "low": "B3",
                "high": "D5"
            },
            {
                "key": "tenor",
                "name": "Tenor",
                "low": "D3",
                "high": "C4"
            },
            {
                "key": "bass",
                "name": "Bass",
                "low": "F2",
                "high": "C3"
            }
        ],
        "previewUrl": null,
        "previewType": "audio/mp4",
        "words": [
            "Silent night, Holy night,",
            "All is calm, all is bright,",
            "Round yon virgin mother and child,",
            "Holy infant so tender and mild,",
            "Sleep in heavenly peace,",
            "sleep in heavenly peace."
        ],
        "credits": [
            "Words: Joseph Mohr (1816); English words John Freeman Young (1859)",
            "Tune: Franz Xaver Gruber (1818)"
        ],
        "plus": true,
        "freeThisMonth": false,
        "pageUrl": "https://beta.stackapella.com/songs/silent-night",
        "startUrl": "/?song=silent-night&ref=song-page"
    }
}