It is in the nature of things that the selection is not the taste is not one hundred percent true, but that is not at such a collection of Jamtracks. But rather that somewhere else to practice previously learned to authentic music. And that goes to "A Whiter Shade Of Pale" and "Walk Of Life" etc. well. The vocal lines are recorded on a backing band by Sax and sound ... well, according to Midi - but never mind. Some titles require turning over what bit annoying. A copier helps to get around this. Incidentally, there are no tabs, everything is written in standard notation. The degree of difficulty increases from very easy (Imagine) to not so simple, pretty complex pieces, such as "I Can not Help Myself" by the Four Tops - originally performed by none other than James Jamerson played if my information , The somewhat sterile CD sound and not always clever set the pressure to justify no penalty, on the whole, highly recommended! An overview of the pieces contained there in halleonard.com or amazon.com.