play pause radio-play skip-back skip-forward playing search copy check embed close plus caret-down caret-left caret-right caret-up chevron-down chevron-left chevron-right chevron-up arrow-left filter menu more-horizontal more-vertical share share-android select star star-block volume-block volume-mute-block volume-mute volume lock settings recording composition devices laptop speaker
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Helmut Koch

conductor, soloist
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