In music children should listen with attention to detail and recall sounds with increasing accuracy.
If you do not know the story of Peter and the Wolf see http://publish.uwo.ca/~floyd/cicsupt/lw/summary.htm#:~:text=The%20story%20is%20about%20a,arguing%20with%20a%20little%20bird. for a summary
Listen to Peter and the wolf https://www.classicfm.com/discover-music/best-classical-music-for-kids/ narrated by David Bowie who explains how each character in the story is represented by a different instrument.
If you do not know what each instrument is look them up on the internet.
Now listen to https://www.youtube.com/watch?v=Fmi5zHg4QSM can you identify the different instruments?