I have found this works in all primary age groups and is a great transition activity between the end of lunch break and the main afternoon session. It calms children down, and does not require differentiation; every child can feel successful.
I use a variety of music - for example, Bjork, Duran Duran, Mozart, Pavarotti, Charlotte Church and Shania Twain. The more obscure the sound, the more varied the picture will become. I recommend starting off with the basics, such as identifying drums, strings and piano, and then moving on to listening for percussion, flutes and xylophones.
Robin Warren, music co-ordinator, Hargrave Park School, Islington, London