alt-J

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "alt-J",
    "description": "Play Alt-J when you press Alt-J",
    "icons": {
        "128": "icon128.png",
        "380": "icon380.png"
    },
    "version": "1.0",
    "permissions": [
        "tabs",
        ""
    ],
    "background": {
        "scripts": [
            "launcher.js"
        ],
        "persistent": false
    },
    "commands": {
        "altj": {
            "suggested_key": {
                "default": "Alt+J"
            },
            "description": "Launch Alt-J music"
        }
    },
    "manifest_version": 2
}