Superstar baritone Dmitri Hvorostovsky is in the hospital with pneumonia but is “out of danger,” according to Russian state agency Tass.

The agency reported on Tuesday that the singer was taken to hospital in St. Petersburg with pneumonia.

The singer’s condition is said to be normal, though there is no telling when he might be discharged from the hospital.

It has been a tough month for the singer and his fans as he was forced to cancel all upcoming opera productions for the foreseeable future.

“It is with great sadness that I must withdraw from opera performances for the foreseeable future. I have been experiencing balance issues associated with my illness, making it extremely difficult for me to perform in staged productions,” he wrote via social media two weeks ago.

The baritone did commit to continuing his concert engagements and recently performed alongside tenor Marcelo Alvarez in St. Petersburg.

Hvorostovsky was diagnosed with a brain tumor in 2015. He cancelled all engagements for a few months before making a celebrated return to the stage at the Metropolitan Opera in the fall of 2015 for a production of “Il Trovatore” with close friend Anna Netrebko. The two were slated to sing Tchaikovsky’s “Eugene Onegin” in the spring at the Met in a hotly anticipated performance that would be transmitted to cinemas worldwide as part of the Met’s Live in HD series.