I think more music books need this much devotion and dedication put into them, not only are a good portion of Jelly Roll Morton's greatest songs that were composed and performed in the early 20th century, but also indicated all the recording dates of the song, original tempo, and a short description of the history and style of the song. The book starts off with a history on Jelly Roll's life and I got more out of that than I did on any wikipedia or web page I used to research the most influential jazz performer of that time period. It also describes Jelly Roll's style and compares it to that of later jazz/stride pianists, stating that Jelly Rolls music might not have been as great as those of later stride pianists, but for the style Jelly Roll created, it truly was the best. Jelly Rolls music reflects the time period and style of ragtime mixed with early jazz and even a little blues. The transcriptions are identical to the actual recordings and some are playable for intermediate players, and will even challenge the advanced pianist who is not familiar with Morton's style. I believe most pieces in this book are playable if practiced long enough, and aren't as difficult to play as say stride or certain types of classical, except maybe fingerbuster. These pieces are all fun to play and learn, and just transcribed so beautifully that if played with the right tempo and fingering techniques will impress your audiences. It even shows the changes made to the original Jelly Roll transcription, which shows the people behind making this book really cared about getting the true Jelly Roll note for note transcriptions of his most popular pieces. It is a must own for any aspiring pianist in my opinion and well worth the price.