RSK111202 - Rockschool Bass Companion Guide, Debut-Grade 8. Book and 3 CDs. This book is a Companion Guide to our 2012-2018 Bass Syllabus and should be used alongside the candidate books and the Syllabus Guide. Inside you will find examples of the 'unseen' tests which you will encounter in a Rockschool grade exam. The Companion Guide has been produced to help you practise these tests and therefore maximise your exam performance.