String Quartet String Quartet - Level 4 - Digital Download SKU: A0.1023452 Composed by Myrto A. Kostaropoulou. Concert,Contemporary,Standards. Score and parts. 34 pages. Myrto A.Kostaropoulou #6188435. Published by Myrto A.Kostaropoulou (A0.1023452). My first composition for a String Quartet. An exciting piece of music in 9/8, following the greek zeibekiko dance rhythm.