Error (ReferenceError: connection is not defined) what should I do?

Question

Node.js

I'm writing code that should play music when.
I created a variable:
const dispatcher = connection.playFile('./Pedrina y Rio - Enamorada.mp3'); which should play an mp3 file, but gives an error that "connection" is not defined
Here is the code:

const dispatcher = connection.playFile('./Pedrina y Rio - Enamorada.mp3');

dispatcher.on('end', () => {
});

dispatcher.on('error', e => {
  console.log(e);
});

Here is the error:

const dispatcher = connection.playFile('./Pedrina y Rio - Enamorada.mp3');
                   ^

ReferenceError: connection is not defined
    at Object.<anonymous> (Z:\bot\bot.js:52:20)
    at Module._compile (internal/modules/cjs/loader.js:936:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:947:10)
    at Module.load (internal/modules/cjs/loader.js:790:32)
    at Function.Module._load (internal/modules/cjs/loader.js:703:12)
    at Function.Module.runMain (internal/modules/cjs/loader.js:999:10)
    at internal/main/run_main_module.js:17:11

Answer 1

Define connection