Suleyman Dede Erguner the grandfather of Kudsi.
From Kudsi's book: "Journeys of a Sufi Musician"
I think this may be the first time I understand turkish Rast. (generally, my ears just pick it up as a distorted version of major, or a sort of arabic rast on a diet).
many thanks, and I wish I had something to contribute here.
apparently, there's a new CD from kalan. Niyazi Sayin and Necdet Yasar, classic turkish music,
I took a small peek on one of the samples on the kalan site, I'm still getting goosebumps from what good old niyazi was doing. (the last track, it was a concert clip apparently).