This is an example of a discord music bot that support multiple commands:
!help - Display all the available commands.
!play <url> - Play the Youtube audio. Connect to the voice channel if already not.
!pause - Pause the current audio.
!resume - Resume the current audio.
!skip - Skip the current audio.
!stop - Stop the current audio.
!leave - Leave the voice channel and clear the queue.
!queue - Display the elements in the queue.
!clear - Clear the queue.
You'll need to create a .env file with this command in the terminal
touch .env
Then create a variable inside this file
bot_token = your_bot_token
I advise you to follow this video, it'll explain you well how to create a bot on the Discord Developer Portal and then get its token.