1曲のJSONデータ，scoresに複数の楽譜情報を詰め込める．

gistfile1.json

{
    "music_info": {
        "categories": [
            "hoge", 
            "yamada", 
            "puyo"
        ], 
        "group_name": "group_name", 
        "music_name": "music_name"
    }, 
    "scores": [
        {
            "derrived_from": "derrived_from", 
            "difficulty": "easy", 
            "edit_by": "edit_by", 
            "instrument": "guitar", 
            "score_hash": "score_hash", 
            "symbols": [
                {
                    "frets": 0, 
                    "string": 6, 
                    "timing": 44100
                }, 
                {
                    "frets": 1, 
                    "string": 5, 
                    "timing": 88200
                }, 
                {
                    "frets": 2, 
                    "string": 4, 
                    "timing": 132300
                }
            ], 
            "tempo": 120, 
            "tuning": [
                1, 
                2, 
                3, 
                4, 
                5, 
                6
            ]
        }
    ]
}