Later in life, he taught at Mainz University in Germany and the Curtis Institute of Music in Philadelphia, Pennsylvania.
Celibidache frequently refused to release his performances on commercial recordings during his lifetime, claiming that a listener could not obtain a "transcendental experience" outside the concert hall.
Many of the recordings of his performances were released posthumously.
He has nonetheless earned international acclaim for celebrated interpretations of the classical music repertoire and was known for a spirited performance style informed by his study and experiences in Zen Buddhism.
He is regarded as one of the greatest conductors of the 20th century.