YouTube
and Spotify. Here are some sample playlists:
You can use this music as a sort of passive revision - to listen to while doing something else, or you can use it in a more active way - try listening to 1 minute extracts 3 times and then writing what you can about the different Areas of Study. They are: rhythm and metre, harmony and tonality, texture and melody, timbre and dynamics and structure and form. Good luck!