Comedy Book

I was looking for a book as to why we laugh and why we find certain things funny ; the reviews mentioned that the book covered Freud's theories of humour, as well as certain other philosophical views of humour and laughter. While these were indeed present, they were in short supply ; rather, there was a slightly academic discussion of comedy considered as a dramatic category, plus a reading of common comedic tropes through some sort of a critical theory paradigm. All in all, it was a little obtuse and not exactly what I was looking for, but there were more than enough sections (especially the last chapter) to justify the book.