Above you can see most of the singles from Erkin Koray
A picture from a single taken for illustrating a tape with actually less progressive music
The recordings from these two tapes, from 1967-1973 were taken for the limited edition collector's reissue LP which you see here in the middle. It seems that the LP in the middle was made with permission of Erkin, while the tapes were not.
LP's :
This picture has been used for the Xotic Mind LP "Electric Türk" limited edition LP. This LP was based upon (actually unofficially reissued Turkish) tapes. Of course they themselves bootlegged the tapes including all mistakes. Also they never payed Erkin any rights. Never the less, in those days it was the first album from Turkey that attracted foreign interest in Turkish music. Windfried from Nexus Records reissued officially the "Electronic Türküler" LP, by having acchieved a deal with Erkin. The tape you see here is without any progressive material.