Ruchenitsa for symphony orchestra from Op.18 Autumn Elegy for symphony orchestra Op.15 No.2 Prelude 'Solitude' for symphony orchestra Op10 No.3 Chicago symphony orchestra & chorus Balkan Dance for symphony orchestra Op.46 No.3 Prelude 'Solitude' for symphony orchestra Op.10 No.3 Bulgarian Suite for symphony orchestra Op.21 Chicago symphony orchestra New symphony orchestra of London Boston symphony orchestra seiji ozawa