For 17 years, Angela Hewitt, one of the world’s foremost classical pianists, has been performing recitals and creating acclaimed recordings with a rare concert grand piano.

But their partnership has now ended. This week, she composed a eulogy for her beloved instrument, as full of emotion and longing as the music she once created with it, after movers dropped the piano, destroying it.

In a Facebook post on Sunday, Ms. Hewitt described having just completed a recording of Beethoven variations at a studio in Berlin. She was elated with the results, she said, and as she was finishing up with her producer, the movers entered the control room, mortified.

“They had dropped my precious Fazioli concert grand piano,” she wrote.

“I adored this piano,” she continued. “It was my best friend, best companion.”