Yannis Xenakis was a Greek-French composer, architect, and engineer, born on May 29, 1922, in Brăila, Romania. He is known for his innovative approach to music, combining mathematical concepts with artistic expression. Xenakis studied under Olivier Messiaen and became a prominent figure in the field of contemporary classical music. His works often incorporated elements of stochastic music, which uses probability and random processes to create compositions. Xenakis also contributed to the development of electroacoustic music and was involved in architectural projects, reflecting his dual interests in music and design. He passed away on February 4, 2001.