Art Nouveau artists drew inspiration from the natural world, incorporating organic forms, flowing lines, and symbolic motifs into their works. This theme was reflected in music and dance, where composers and choreographers sought to evoke the beauty and mystery of nature through their creations.

Impressionism, a musical style that emerged in the late 19th century, shared many aesthetic principles with Art Nouveau. Impressionist composers sought to capture fleeting moments and sensory experiences through their music, using evocative harmonies, colorful orchestration, and innovative forms.

Art Nouveau dancers embraced flowing, sinuous movements that echoed the organic forms found in nature. They sought to create a sense of unity between the dancer and the surrounding environment, blurring the boundaries between art and life.

Modern dance, which emerged in the early 20th century, was heavily influenced by Art Nouveau's emphasis on individuality, emotional expression, and the rejection of traditional forms. Modern dancers sought to break away from the rigid conventions of ballet and explore new ways of moving and expressing themselves.

Art Nouveau's emphasis on individuality and emotional expression led to a shift in the role of the dancer. Dancers were no longer seen as mere vessels for expressing the choreographer's vision; instead, they were encouraged to bring their own unique interpretations and emotions to their performances.

Claude Debussy, a French composer, was a prominent figure in the Art Nouveau movement. He was known for his innovative use of harmonies, orchestral colors, and evocative melodies. His works, such as 'Prélude à l'après-midi d'un faune' and 'Pelléas et Mélisande,' captured the essence of Art Nouveau's dreamy, sensual, and symbolic aesthetics.

Art Nouveau's emphasis on organic forms and flowing lines was reflected in the design of dance costumes and sets. Designers drew inspiration from nature, incorporating sinuous curves, floral patterns, and asymmetrical shapes into their creations. The goal was to create a visually stunning and immersive environment that complemented the fluid movements of the dancers.

Isadora Duncan was an American dancer and choreographer who played a pivotal role in the development of modern dance. She rejected the rigid conventions of ballet and embraced a more natural and expressive style of movement. Duncan's performances were characterized by flowing, improvisational movements, often inspired by ancient Greek art and mythology.

Art Nouveau artists sought to create a Gesamtkunstwerk, or a total work of art, in which all elements of a performance came together to create a cohesive and immersive experience. Music and dance were often combined in Art Nouveau performances, with composers and choreographers working closely together to create works that complemented and enhanced each other.

Sergei Diaghilev was a Russian impresario and choreographer who played a leading role in the development of modern ballet. He founded the Ballets Russes, a touring company that showcased innovative and groundbreaking ballets. Diaghilev was known for his collaborations with artists from various disciplines, including composers, dancers, and designers, and for his innovative use of lighting and stage design to create visually stunning and immersive performances.

Art Nouveau's emphasis on breaking away from traditional conventions and creating immersive experiences led to a shift in the role of the audience in dance performances. In some Art Nouveau performances, audiences were given the freedom to move around and interact with the dancers, blurring the boundaries between performer and spectator.

Alexander Scriabin was a Russian composer who was known for his innovative use of harmony, tonality, and form. He was particularly interested in exploring exotic scales and rhythms, which he incorporated into his compositions to create a sense of mystery and otherworldliness. Scriabin's music often evoked a sense of synaesthesia, where different sensory experiences were intertwined.

Art Nouveau's emphasis on subtlety and refinement led to the development of new musical instruments that were capable of producing softer and more delicate sounds. These instruments, such as the Ondes Martenot and the Theremin, were often used in Art Nouveau compositions to create a sense of atmosphere and mystery.

The Ballets Russes was a touring ballet company founded by Sergei Diaghilev in 1909. The company was known for its groundbreaking and controversial performances, which often featured innovative choreography, music, and stage design. The Ballets Russes played a pivotal role in the development of modern ballet and influenced many artists and performers of the time.