By Deborah Vankin

Who knew the sound of insanity could be so beautiful? We had the opportunity to sit in on a rehearsal of Los Angeles Opera's production of Gaetano Donizetti's "Lucia di Lammermoor," which opens Saturday.

The afternoon was the very first time cast or crew would be rehearsing with the rare, treasured instrument -- the glass harmonica -- that Donizetti intended for his tragic opera of love and madness. French musician Thomas Bloch had arrived from Paris only the night before, with the glass harmonica in tow.

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Source: http://www.latimes.com