This theme starts as a nostalgic guitar solo and then changes in sad and later the mood continues with accordion. The theme in my opinion comes from a movie because these Greek series always put themes from known movies like ''Quick & The Dead'', ''Magnolia'', ''The Good, The Bad & The Ugly'' etc. I hope someone knows the sound or the composer of this wonderful piece

http://www.youtube.com/watch?v=miPmOQs9QpA