> Mehrbändiges Werk
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baritone/bass:
Boosey & Hawkes opera anthology baritone/bass Baritone/bass edited by Richard Walters
New York, NY: Boosey & Hawkes, [2018]
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soprano:
Boosey & Hawkes opera anthology soprano Soprano edited by Richard Walters
New York, NY: Boosey & Hawkes, [2018]