Can anyone identify?

First, I put this in trees but the plant in question is more of a bush. Fifty years ago, when we lived in town for a year or so, I helped the neighbor lady plant some flowers near this bush.  It was a big bush, easily taller than the first story of the house it grew against and very spreading as well. I don't remember what the leaves looked like but the flowers, which were white in color, had an amazing fragrance.  They grew in clusters and hung down like little bells, each individual one was maybe 1/2 across. I know it wasn't any form of bridal veil, mock orange or spirea. I've never seen it at a nursery or in catalogs, but maybe it would need to be in bloom for me to recognize it.

I want one for my yard. Does it ring any bells with anyone?

Maybe one of these:
https://www.almostedenplants.com/shopping/products/1190-temple-bells-pieris-lily-of-the-valley-bush-andromeda/
or
https://leafyplace.com/white-flowering-shrubs/
Good luck identifying it!

Nope those are not it, but now I want this one too.

Denise Kersting wrote:Maybe one of these:
https://www.almostedenplants.com/shopping/products/1190-temple-bells-pieris-lily-of-the-valley-bush-andromeda/

Any chance it was a bladdernut?  I just am hoping  They grow to between 8-15' tall.  Reading Martin Crawford's books makes me want to try these.

I'm trying to remember if my bladdernut flowers were scented, and I'm afraid I can't remember. They were a lot prettier than I expected.
Fragrant snowbell (Styrax obassia) may be another possibility:

source
I wondered whether it might have been a silverbell (Halesia carolina), but I can't find any reference to the flowers being scented, so that seems less likely. I'm hoping to grow those, the fruit are reputed to be edible like a pea when young.

Thanks Nancy, the fragrant snowbell Fragrant Snowbell looks like it might be it, but I can't tell for sure. The flowers don't look exactly right but it was a long time ago and my strongest memory of it was the fragrance. That webpage describes it as a tree but I'm sure that one was a bush, but the size is right. I guess it could have been cut down or trimmed and resprouted as a bush at some point. I might order one of these and if turns out not to be it, I still get a nice tree for the yard.