Thielemans died in his sleep in a Belgian hospital on Monday, his manager said. He was hospitalized last month after a fall, but had been in good spirits after an operation on his shoulder.
“He was so happy. He was doing well,” manager Veerle Van de Poel said.
“We were very surprised” by his passing, she said. “He was sleeping, and he did not wake this morning.”
Born in Brussels on April 29, in 1922, Jean-Baptiste Frederic Isidore Thielemans started playing the harmonica as a hobby and got “contaminated” by the jazz virus during the German occupation, according to his website.
His first international breakthrough came in 1950 when he joined Benny Goodman on a European concert tour. He emigrated to the U.S. in 1952, joining Charlie Parker’s All Stars. He also played with other jazz greats, including Ella Fitzgerald, and mainstream stars like Frank Sinatra, Paul Simon and Billy Joel.
His harmonica solos figure on many film scores, including Midnight Cowboy, The Getaway and Sugarland Express, and also on the theme music to the children’s TV series Sesame Street.
Thielemans, who also played guitar, was honored by Belgium’s royal family in 2001, when King Albert II gave him the title of baron.
Belgium’s royal family said it was “deeply moved by (the) passing away of Toots Thielemans, one of the greatest jazzmen.”
The U.S. National Endowment for the Arts granted him the 2009 Jazz Master Award.
“We have lost a great musician, a heartwarming personality. All my thoughts are with the family and friends of Toots Thielemans,” Belgian Prime Minister Charles Michel tweeted.
On the liner notes of one album, Quincy Jones said he believes “without hesitation that Toots is one of the greatest musicians of our time. On his instrument he ranks with the best that jazz has ever produced. He goes for the heart and makes you cry.”
Thielemans hung up his harmonica in 2014 as health problems linked to his age made it more difficult for him to take to the stage.
A jazz festival held in his name was due to take place from Sept. 9-11 in the town of La Hulpe, about 16 miles southeast of Brussels, where Thielemans lived.
Van de Poel said his funeral will be held in the town at 11 a.m. local time on Saturday.
This article originally appeared on The Hollywood Reporter.