the choice of the author are clear: 100 groups (100 in additional supplement): there is a mix between the standard and assumed the most overlooked albums; scholars and beginners will get their money ... presented between albums, the albums of the group and advised groups associated + 100 other albums, you have here a wealth of information. it gives me a real Pandora's box: and your discography budget will take a hit! the only criticism is that the book is in black and white! true complement to the radio morow.com thank you Mr. Delage