{...}: {
  programs.ncmpcpp = {
    enable = true;
    bindings = [
      {
        key = "j";
        command = "scroll_down";
      }
      {
        key = "k";
        command = "scroll_up";
      }
      {
        key = "J";
        command = ["select_item" "scroll_down"];
      }
      {
        key = "K";
        command = ["select_item" "scroll_up"];
      }
    ];
    mpdMusicDir = "/data/music";
  };
}