The church bells were founded 7 times until the perfect sound was achieved.

There's the perfect sound; the resistance of the ball is negligible.

"They haven't found the perfect sound, and the instrument still is not standardized."

Not quite a perfect sound but indisputably a bell ring!

Anything less than perfect sound would be a disaster.

By then that previously perfect sound came with a wobble.

He actually did not want such a perfect sound.

His instruments, though few in number, are constructed of top quality material and have perfect sound.

And hands, to coax each pipe to pronounce the perfect sound.

The organ, completed in 1729, is known for its perfect sound despite having only wooden pipes.