It is an important album and the book is even more important, containing information about when the Ottoman court music departed from it's earlier
Arabic-Persian roots and evolved into a highly refined and restrained style now known as Turkish classical music.
These albums should not go out of print!
There are others in this series that are so-far impossible to find anywhere.
Two more in this series I have are Samir Siblini and Beirut Oriental Ensemble's Sayyed Darwish album - both amazing .