BlitzBooks Publications How To Blitz Grade 4 Theory Book is the unique feature of the 'How to Blitz' series is the conversational and informal style of the worksheets. Students are put at ease and find working through the texts an enjoyable experience. The workbooks are set out in a fun and easy-to-use format. Each concept is covered by step-by-step worksheets which ensure maximum understanding and minimum errors. This book is perfect for: music teachers, music students, parents of music students. The most comprehensive and fun theory book on the market.