In 1979, Maestro Li joined hands with American violinist Isaac Stern to perform the violin concertos of W.A. Mozart and Johannes Brahms. This historical musical collaboration was captured in the Academy Award-winning documentary “From Mao to Mozart”, which offered some of the first glimpses of a newly opening China. In the ensuing years, Li served as a bridge between musicians from China and abroad, performing with many world-class musicians including David Oistrakh, Isaac Stern, Yehudi Menuhin, Paul Tortelier, Yo-Yo Ma, Fou Ts'ong, Bezrodnai, Tatiana Nikolayeva and Leonora Milà, as well as well-known Chinese pianists Loyi Wu, Liu Shikun, Yin Cheng zong and Shi Shucheng, violinists Lu Siqing, Xue Wei and Yu Linan, and many others.
Li Delun had been a member of the Jury at the Menuhin International Violin Competition in Paris in 1985 and the International Tchaikovsky Competition in Moscow in 1986. He was the President of the Jury at the National Competition of Orchestra Conductors in China in 1993. He devoted himself to musical education, believing that classical music was not rarefied art for the upper class but rather something to be enjoyed by all. He was a tireless advocate for classical music and spent his free time lecturing on the subject of music enjoyment throughout China, presenting its beauty and sophistication with a simple and humorous delivery to university students and factory workers alike, making it appealing to the younger generation as well as the general public. He has given hundreds of lectures in more than 20 cities in China.
Li Delun was awarded the Honorary Prize of Conductorship of China in 1980. His professional and philanthropic work earned him rewards and accolades around the world. He was granted the Liszt Memory Medal by the Ministry of Culture and Education of Hungary in 1986, and was awarded the National Medal of Friendship by President Boris Yeltsin of Russia in 1997. He adjudicated for the International Tchaikovsky Cello Competition in Moscow in 1990 and the International Menuhin Violin Competition in Paris.
On October 19, 2001, Li Delun died at age 84 in a Beijing hospital, after having lived a full and meaningful life dedicated to music.