The birth of Jalil Shahnaz (tar and setar musician) is observed on May 22, 1921. Jalil Shahnaz was born in Isfahan on this date and became one of the most prominent tar and setar players in Iranian music. Coming from a musical family, he began learning traditional Iranian instruments at a young age. Shahnaz developed a distinctive style in playing the tar and setar, significantly influencing the evolution of classical Iranian music. His works remain a subject of interest for music enthusiasts and researchers. Throughout his decades-long career, Jalil Shahnaz collaborated with many leading figures in Iranian music and participated in numerous solo and ensemble performances. He was actively involved in radio and television programs during the 1960s and 1970s, and his improvisational pieces are regarded as exemplary in the Iranian modal music tradition. The inclusion of Jalil Shahnaz’s birth date in the Gregorian calendar dates back to 1921; this date was designated in certain calendars to honor his outstanding role in Iranian music and the enduring impact of his works. The occasion is typically commemorated by remembering his life and artistic legacy, with his music featured in various media.