Variable HarpSongsConst

HarpSongs: readonly [
    "hymn_joy",
    "frere_jacques",
    "amazing_grace",
    "brahms",
    "happy_birthday",
    "greensleeves",
    "jeopardy",
    "minuet",
    "joy_world",
    "pure_imagination",
    "vie_en_rose",
    "fire_and_flames",
    "pachelbel",
] = ...