I start by loading in a sound and replacing an already existing in-game sound without needing new sprites or commands. I then created my own background music sound by adding an event and selecting a sound to repeat continuously in the game. Here I changed the sound for the player's plane movement in a similar way, creating a new sound action and setting it to loop at a lower volume than the background music. This final part describes setting a louder death sound effect to play when the player dies while allowing the game to continue.