'How to Pass Higher Music Listening', definitely! I'd also recommend this book - I know it's for GCSE, but we used it from Int. 2 to Advanced Higher, it's got some great excerpts for you to get to know your way around the different periods and forms.(Original post by JTR__)
What textbooks did you find most useful for Higher Music? I am crashing this year, and am unsure what books would be most suitable, and the teachers are no help!!
Is it worth revising for mocks...or should you just wing it?