The phrase "about any topic" is correct and usable in written English.
It can be used when discussing a subject matter or theme without restrictions.
Example: "In this seminar, we will be open to questions about any topic related to our field."
Alternatives: "on any subject" or "regarding any theme".
He likes heavy metal music and can converse about any topic, from music to politics.
But at some point some organisation is going to feel offended or targeted about any topic".
Moreover, what music fans can say their favorite song about any topic is never going to change?
In free-format programming, D.J.'s are invited to produce a show on just about any topic or musical genre they please.
We encouraged our students to be their own media by creating a YouTube video about any topic related to 9/11 as their final project.
"We ask J. B. to be versed at a high level so that he can speak to senior executives about any topic that concerns Brown Technology," he said.
Subtitled "texting in public", this app aims to get people hosting virtual chatrooms about any topic they like, encouraging visitors to contribute their thoughts and images.
"Luckily... what the readers and staff had to say about any topic usually made a sharper, more amusing article than one author could produce by conventional means".
The Internet provides an avalanche of information on just about any topic, of course, but sites devoted to skiing and ski resorts are in particularly good supply.
It wants to get people hosting talkshow-style chats about any topic they like, inviting their audience to contribute thoughts, reactions and GIFs.
Bonanno says that when he was mourning his father he had to remind himself that "just about any topic pertaining to a dead person... still made people in the West uncomfortable".
