ROME (AP) -- Claudio Abbado, a star in the great generation of Italian conductors revered for developing a rapport with members of the world's leading orchestras while still allowing them their independence, died Monday. He was 80.
Abbado died at home in Bologna after a long illness, said Raffaella Grimaudo, spokeswoman for the Bologna mayor's office.
Abbado made his debut in 1960 at La Scala in his home city of Milan and went on to be its music director for nearly 20 years. Among his many other positions were as music director of the Vienna State Opera, the Berlin Philarmonic and the London Symphony Orchestra and as principal guest conductor of the Chicago Symphony Orchestra.
Even as he battled illness in his later years, sharply cutting back on his appearances, Abbado founded his own all-star orchestra in Lucerne, Switzerland, and devoted more time to training young musicians and founding youth orchestras in Europe.
Just last year, Italy's president paid tribute to him by naming him senator for life. In an unusually personal message of condolences, President Giorgio Napolitano said Abbado had "honored the great musical tradition of our country in Europe and the rest of the world."
The Berlin Philharmonic, where Abbado was chief conductor from 1990 to 2002, said it was mourning "an extraordinary musician and person."
"His love of music and his insatiable curiosity were an inspiration to us," a statement on the orchestra's website said.
Chicago Symphony Orchestra Music Director Ricardo Muti said he admired Abbado for the "seriousness and profundity that characterized his life as a musician and as a Maestro."
Abbado was known for his musical ability, for conducting his programs without scores and for his rapport with orchestra members.
He had suffered health problems for many years, resigning his Vienna Opera post for unspecified health reasons in 1991 and then undergoing stomach cancer surgery in 2000.
La Scala said illness forced the cancellation of two highly anticipated concerts in 2010 that were to have marked his return to the Milan opera house for the first time in 25 years and be the 50th anniversary of his conducting debut. The excitement had been such that Abbado had requested that 90,000 trees be planted in his name for the benefit of Milan residents as a living memorial to mark his return to the city. The project was later abandoned by the city as too costly.
A tribute on La Scala's website said Abbado had given the opera house "18 of his finest years," starting in 1986 when he was named musical director of the orchestra.
It hailed Abbado for leaving his mark as a conductor "without confines, as a musician without preconceptions, as a man of theater ready to risk, as a man of thought open to the world."
Over the years, Italian media had reported on tensions between Abbado and his successor at La Scala, Riccardo Muti. Muti invited Abbado to stage "Elektra" at the opera house, but the production was never put on due to apparent misunderstandings -- Muti expected La Scala's orchestra and chorus to perform, while Abbado was planning to bring musicians from Vienna.
However, in later years, Muti denied there was bad blood between the two. He pointed to Abbado's performance in the summer of 2011 at the Ravenna Festival, founded and directed by Muti's wife.
Muti said Monday the loss of Abbado "heavily impoverishes the world of music and of art," the Italian news agency ANSA reported.
Abbado did eventually make his return to La Scala, after 26 years. He conducted Mahler on October 31, 2013, and received a 15-minute standing ovation, shouts of approval and showers of flowers.
Abbado was born June 26, 1933, into a family of musicians, studying with his violinist father, Michelangelo Abbado, at the Milan Conservatory in the 1950s.
He also studied composition and conducting and took cello and organ courses. He went on to study conducting in Vienna and in 1958 won the Koussevitsky Competition, bringing him to the attention of the Italian musical world.
Critics said Abbado had a special touch with orchestra members, giving them a degree of independence that assured their loyalty.
Abbado is survived by his second wife and four children.
A wake was planned for Tuesday in a Bologna church, where music will be played in tribute, the LaPresse agency reported from that city.
Biographical material in this story was written by retired Associated Press writer Victor L. Simpson. Nicole Winfield and Frances D'Emilio in Rome and Geir Moulson in Berlin contributed to this report.