Nineteenth century piano concerti typically allow for improvisation in the cadenza section.
Nineteenth century piano concerti typically allow there to be improvisation in the cadenza section.
Nineteenth century piano concerti typically allow for improvisation in the cadenza section.
Nineteenth century piano concerti typically allow there to be improvisation in the cadenza section.
This is a subtle distinction. We use "A allows B to do X" for a person or legal document that gives formal permission of some kind ("the law allows me to do X"). When a thing has room for something or can accommodate something, we use the idiom "to allow for X.", so the usage of the idiom in the first choice is appropriate.