Hello Year 10,
Below you will find links to resources you will need to help you complete the composition (task #2). The first link is a pre-recorded video of level one in Super Mario Bros., the second link is a tutorial video (spoken by me!) explaining how to load the pre-recorded video into garageband, add audio files into your garageband session and also create music.
Video: Level One
Garageband Tutorial
lukebteacher 