Mazhar Alanson and Fuat Guner released a fine album entitled "Turkuz Turku Cagiririz", produced in 1968. The overall good album contained a few more outstanding tracks in a pastoral acid folk style with male / female dual vocals.
They also released a single : "Turkuz Turku Cagiririz" / "Gullerin Icinden" (Yonca Numara Records 051).
Later was formed Ipucu : Mazhar & Fuat & Ozkan & Ayhan & Galip. This group has only recorded one single : "Heyecanli"/ "Hop Otur Hop Kalk" (Bir Numera Rec. A.K. 76). "Heycanli" is a fine light rock pop song tune with some electronic instrument ?, complex enough rhythms, funky electric guitars.
Later Mazhar & Fuat & Ozkan made a new group MFÖ in 1970. The very early period of MFÖ is still interesting in style for progressive music collectors, but I don't know if any of this ever was officially recorded. Most material is less interesting.
I don't know the true relation with Kaygisizlar and M.F.Ö.