Lili Boulanger was a musical prodigy born in Paris who showed talent from a young age. She grew up in a family full of musicians and learned several instruments. She attended the Paris Conservatoire with her sister Nadia. Even though she faced health problems like pneumonia, she waited patiently to begin formal music studies. Teachers such as Georges Caussade and Paul Vidal helped her learn harmony and composition. Her sister Nadia was always a strong supporter and close friend throughout her life. In 1913, Lili achieved a significant milestone by becoming the first woman to win the Prix de Rome with her cantata Faust et Hélène. This success brought her a contract with the publisher Ricordi. While Lili's musical career progressed, her sister Nadia took a supporting role as an assistant in an organ class at the Conservatoire. Lili's compositions were known for their rich harmony, new ideas in instrumentation, and careful attention to fitting music to text. Her style was influenced by Gabriel Fauré and Claude Debussy. Chronic illness affected Lili's life deeply, including an early case of bronchial pneumonia that weakened her immune system. Despite her health challenges, she kept composing music and worked to support French soldiers during World War I. She died young at 24, leaving her opera La princesse Maleine unfinished. Her music reflects the changes in style during her time, fitting into post-Romantic music with touches of Symbolism and Impressionism. Many of her works express feelings of being alone, alienated, and struggling with depression and loneliness.