Some of my GCSE students have bought the Alan Charlton revision guide, which has different information from the Paul Terry student guide (which I have been teaching from!). For example the student guide teaches that Steve Reich Electric Counterpoint is in Eminor and modulates to Cminor and the revision guide says that it is in G major and modulates to Eb major!!! there are many other mistakes like this, usually realted to harmony. I have only recently seen this revision guide, and have told my students to make sure they revise from my lesson notes, but i'm concerned that there may be many other students who have learned or revised the wrong information! Surely Edexcel should check infromation that goes out from other publishers? After all they have thier stamp on the front! This specification has already been so difficult to teach, with little clue as to what students should expect from the exam and with this added on top, i'm really worried about this years results! I really enjoyed teaching the old Edexcel Spec, and thought it gave students a good foundation for listening and further study (although not always in enough depth for continuation to Alevel), and feel that this spec has left me in a position where i'm constantly questioning whether or not i'm getting it right. Would love to know if anyone else has noticed these mistakes, and others opinions on the new spec. I have already changed to OCR for our new year 10's! P.