discord.py play mp3 file

@bot.command(aliases=['paly', 'queue', 'que'])
async def play(ctx):
    guild = ctx.guild
    voice_client: discord.VoiceClient = discord.utils.get(bot.voice_clients, guild=guild)
    audio_source = discord.FFmpegPCMAudio('vuvuzela.mp3')
    if not voice_client.is_playing():
        voice_client.play(audio_source, after=None)

Here is what the above code is Doing:
1. Get the voice client for the guild
2. Create an audio source using the FFmpegPCMAudio class
3. If the voice client isn’t playing anything, play the audio source