"Flight of The Bumblebee" by Nikolai Rimsky-Korsakov. Arrangement for Clarinet Quartet (advanced level) by Francesco Leone.
Score & Parts: 3 Bb Soprano and Bass Clarinet.
For audio demo: https://www.glissato.it/en/eg1029-flight-of-the-bumblebee-clarinet-4et.html
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"Il volo del calabrone" di Nikolai Rimsky-Kors...