When Arte Germany CEO Wolfgang Bergmann approached Toronto director Larry Weinstein in January 2023 about making a documentary to mark the 200th anniversary of Beethoven’s Ninth Symphony, the filmmaker didn’t exactly break into a chorus of “Ode to Joy.”

Nor could he have anticipated that his film “Beethoven’s Nine: Ode to Humanity,” which premieres in Toronto at Hot Docs on April 28, would be not only his first to break the fourth wall but also his most personal to date.

A prolific director-producer since his early years with Canada’s Rhombus Films, Weinstein has made numerous acclaimed creative music docs, including “Beethoven’s Hair,” a 2005 forensic adventure exploring the composer’s physical and psychic woes. The prospect of making a second Beethoven film, especially with several “Ninth films” already in circulation, seemed dim.

“There wasn’t a lot of time to come up with a big idea,” he told Variety in early April.