"two genres" is correct and usable in written English.
You can use it to describe two types of a single subject. For example, "This author has written books in two genres, fantasy and science fiction."
(One show, two genres, three performances).
The two genres seem like necessary, almost inevitable, bedfellows.
WHAT two genres of music does Mr. Bieber most embody?
Ayaan Hirsi Ali has produced two genres of writing.
Were there any unexpected similarities between the two genres?
Do you think the two genres have more in common than people realize?
This is evident in the basic differences between the two genres.
These two genres involved differing techniques and, to a large extent, constituted separate artistic traditions.
"Combining these two genres is what attracted me to the project," Favreau told the festival magazine.
Certainly, these two genres have been borrowing ideas from each other for years.
With Nomad, Hirsi Ali combines her two genres, narrative and polemic.
