A symphony of black holes merging, you say? Maybe even a...rhapsody?🎶✨🎶

"On 12 April, 2019, the song from a pair of merging black holes swept over the Earth. And, for the first time, we detected them singing in tune.

Or, for a more prosaic description: Two black holes of very different sizes merged, shaking the fabric of spacetime in sympatico. They — oh wait. That's still a little poetic, isn't it? OK, let me try this then:

Across the Universe, two black holes of unequal masses spiraled into each other, sending out harmonic waves of gravitational wave energy, their resonating vibrations merging into a chord that — oh nuts. <sigh> I did it again."

“To Black Holes Merged into One, Singing in Tune the Whole Time”: https://www.syfy.com/syfywire/two-black-holes-merged-into-one-singing-in-tune-the-whole-time