I had a great opportunity to sketch this tree for a few days in a row while working in a building next to it.
I think it's ceiba speciosa
The tree sits in a the inner yard of an o-shaped building in a busy district. But it's completely quiet and very calm next to it with a whole bunch of birds singing with a light echo brushing your ears. And flowers falling on the paved ground with a very distinct sound - soft but very nicely playing with birds.