/?song=let-me-call-you-sweetheart&ref=song-page

{
    "song": {
        "slug": "let-me-call-you-sweetheart",
        "title": "Let Me Call You Sweetheart",
        "description": "The sweetheart waltz, for 2 to 4 singers: the soprano sings the melody, the alto and tenor lean into warm barbershop chords beneath the long held notes, and the bass sings the roots.",
        "difficulty": "intermediate",
        "genre": [
            "barbershop",
            "waltz"
        ],
        "parts": [
            {
                "key": "soprano",
                "name": "Soprano",
                "low": "E4",
                "high": "F5"
            },
            {
                "key": "alto",
                "name": "Alto",
                "low": "C4",
                "high": "A4"
            },
            {
                "key": "tenor",
                "name": "Tenor",
                "low": "G3",
                "high": "E4"
            },
            {
                "key": "bass",
                "name": "Bass",
                "low": "G2",
                "high": "A3"
            }
        ],
        "previewUrl": null,
        "previewType": "audio/mp4",
        "words": [
            "Let me call you sweetheart, I'm in love with you.",
            "Let me hear you whisper that you love me too.",
            "Keep the lovelight glowing in your eyes so true.",
            "Let me call you sweetheart, I'm in love with you."
        ],
        "credits": [
            "Words: Beth Slater Whitson (1910)",
            "Tune: Leo Friedman (1910)"
        ],
        "plus": true,
        "freeThisMonth": false,
        "pageUrl": "https://beta.stackapella.com/songs/let-me-call-you-sweetheart",
        "startUrl": "/?song=let-me-call-you-sweetheart&ref=song-page"
    }
}