 Subsequently she devoted herself to private studies with Prof. Wolfram König, attending master classes with Max Rostal, Seymion Snitkovsky and chamber music courses with the LaSalle Quartet.In 1986 Renate Eggebrecht founded the Fanny Mendelssohn Quartet with which she gave the "World Premiere Performance" of Fanny Hensel born Mendelssohn’s Piano Quartet in A-flat Major (1822) on March 6th 1988 in the Cultural Center Gasteig in Munich and the first Munich performance of the String Quartet in E-flat Major (1834) by this composer.In 1988 she published the first editions of these chamber music works (Furore Verlag, Kassel).