350th Anniversary of the Paris Opera (France 2019)

Souvenir Sheet 350th Anniversary of the Paris Opera it reflects the thematic directions:

An anniversary is the date on which an event took place or an institution was founded in a previous year, and may also refer to the commemoration or celebration of that event. For example, the first event is the initial occurrence or, if planned, the inaugural of the event. One year later would be the first anniversary of that event. The word was first used for Catholic feasts to commemorate saints. Most countries celebrate national anniversaries, typically called national days. These could be the date of independence of the nation or the adoption of a new constitution or form of government. The important dates in a sitting monarch's reign may also be commemorated, an event often referred to as a "Jubilee".

Ballet (French: [balɛ]) is a type of performance dance that originated during the Italian Renaissance in the fifteenth century and later developed into a concert dance form in France and Russia. It has since become a widespread and highly technical form of dance with its own vocabulary. Ballet has been influential globally and has defined the foundational techniques which are used in many other dance genres and cultures. Various schools around the world have incorporated their own cultures. As a result, ballet has evolved in distinct ways

A musician is an artist who composes, conducts, or performs music. According to the United States Employment Service, "musician" is a general term used to designate a person who follows music as a profession. Musicians include songwriters, who write both music and lyrics for songs; conductors, who direct a musical performance; and performers, who perform for an audience. A music performer is generally either a singer, who provides vocals, or an instrumentalist, who plays a musical instrument. Musicians may perform on their own or as part of a group, band or orchestra. Musicians can specialize in a musical genre, though many play a variety of different styles, depending on the cultures and backgrounds involved. A musician who records and releases music can be known as a recording artist.

An opera house is a theater building used for performances of opera. Like many theaters, it usually includes a stage, an orchestra pit, audience seating, backstage facilities for costumes and building sets, as well as offices for the institution's administration.