Instruct: Classify a review into positive or negative sentiment.
Query: Yikes

This book does NOT have it all. Particularly not on "every" aspect of harmonica. The "700+ articles" are on average 1-2 sentences of general knowledge (rarely useful). I love the harp and do NOT love this book. I can "live" just fine without it and it is NOT "the best harmonica book ever written". Almost every other harmonica book here on amazon is better. The other reviews here are insane. (and/or by the author?)