Diogenes Quartett: Stefan Kirpal & Gundula Kirpal (violins), Alba González i Becerra (viola), Stephen Ristau (cello) // 2013, München
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Diogenes Quartett: Stefan Kirpal & Gundula Kirpal (violins), Alba González i Becerra (viola), Stephen Ristau (cello) // 2013, München
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