Music from a Harry Potter movie??

Question

During the Defense Against the Dark Arts class, about Boggarts, Lupin plays a fast paced music. Can anybody tell me what was that music??

And yea I have already been through Amazon.

Answer 1

http://www.amazon.com/Harry-Potter-Prisoner-Azkaban-Williams/dp/B00020HEG6/ref=pd_sxp_f_r/102-6878964-6394502

Scroll down a little and you'll see a list of all the songs and you can listen to them to determine which is the one you want.