When we remodelled our home in 2019, we replaced all of the gutters and downspouts with steel. They were hung so plumb, though, they droplets coming down from the top make it all the way to the bottom in free-fall, giving a muffled-bell-like sound when they hit the bottom out-turned elbow. In the evening as the air cools and deposits its dew on the roof, and the droplets start to coalesce and make their way to the gutters, we hear an hours-long drum solo from all corners of our house. I've tried using a "rain gutter muffler" pad in one, and all it did was get clogged up with gunk that washed down the downspout (mostly from surrounding trees).
It can be enough to keep us away sometimes...I'm surprised none of the neighbors have brought it up, because you can hear it even better when outside, so I have to assume it also telegraphs into their homes.