A founding member of the Istanbul State Turkish Music Ensemble, he performed throughout the world as a cultural ambassador for Turkey and taught twice at the University of Washington (USA).

Garfias again appointed Yaşar, together with the noted ney master Niyazi Sayın as University of Washington Visiting Artists for 1980-81 UW dept.

Yaşar later asked Alan to help preserve the true knowledge of the makams and the Traditional Turkish Art Music Society of Great Britain was started.

Yaşar also in 1986 asked Alan and his children to play a recital on Turkish Television to help with the revival of interest in the ancient makam system.

As well as this in 1988 he asked Alan to write to the Turkish Culture Minister to help establish Yaşar's music group officially.

In 2024 the tape recorded lessons from Necdet made by Alan became available on request for any student or professor of the Makam system, through the Academia.edu website.

However, as a musician, what most distinguishes him is his unparalleled knowledge of and insight into the Turkish classical repertoire and the improvisational possibilities presented by its modal system.