Like the popular Complete Solfeggi of Concone (BQ-51), this volume is full of music that is enjoyable to play and good for the trumpeter's physical and musical well-being.But that's just where the project begins. At the end of each study, John lists a group of keys to which he suggests the player transpose the piece. So it serves as a challenging door tothe necessary art of transposition.An accompanying CD-ROM includes four more versions of the book. These include all of the piano accompaniments for use with the Bb trumpet and C trumpet in printable PDF files. Anotherprintable, PDF file contains all of the studies in the book written with Moving Transpositions for the trumpet. This means that one phrase may be for ""Trumpet in Bb"" and the next may be ""Trumpetin F"" etc.The final and perhaps most unique feature included on the CD is all the accompaniments in SmartMusic files. This will allow you to play the studies with the computer playing the accompaniments.(You do need SmartMusic software, bundled with Finale or obtained through MakeMusic.com). This feature is really enjoyable and you end up playing a lot more because it pulls you through themusic.