John Prine, Courtesy: Eric Frommer

Americana and country singer-songwriter great John Prine has been hospitalized since Thursday with COVID-19 and is now in critical condition and being assisted by a ventilator, his family shared to his Twitter account on Sunday.

“So many of you have loved and supported John over the years, we wanted to let you know , and give you the chance to send on more of that love and support now,” his family wrote.

Prine is not only a highly regarded musician and songwriter, but runs his own label—Oh Boy Records. With the help of Kris Kristofferson, he released his first album in 1971. In 2005 he became the first singer-songwriter to perform at the Library of Congress. His last album, 2018’s The Tree of Forgiveness, debuted at No 5 on the Billboard 200, No. 2 on Billboard’s Top Country Albums and Rock Albums charts, and No. 1 on the Americana/Folk Albums chart. It included contributions from the likes of Jason Isbell, Brandi Carlile and Amanda Shires.

An update on John pic.twitter.com/fPQbv0tLyB

— John Prine (@JohnPrineMusic) March 29, 2020

Kelsey Waldon, who Prine personally signed to his label several years ago, issued a grief-stricken statement on social media Sunday evening.

“This all feels like a surreal dream, or a nightmare where you can’t wake up,” Waldon wrote. “I love your whole family as my own. We know y’all will keep fighting because you are both tough as nails.”