The electronic project titled “Uzeyir Hajibeyli” prepared by the Presidential Library, was developed within the framework of implementing the Decree of the President of the Republic of Azerbaijan, Ilham Aliyev, “On the Celebration of the 140th Anniversary of Uzeyir Hajibeyli.” It highlights the varied activities and rich legacy of Uzeyir Hajibeyli, a prominent composer, the creator of the first opera in the East, and a renowned musicologist, educator, publicist, playwright, and public figure. The project available in Azerbaijani, English, and Russian comprises 12 sections and 23 subsections. The "Composer" section systematically reflects Uzeyir Hajibeyli’s life and work including his biography, chronology, memories about him, quotes, songs, sheet music, manuscripts, and musical and scientific activities. The section “Commemoration of his legacy” highlights information about the monuments erected in honor of the great composer, as well as the established house museums and other memorial sites, to preserve his rich legacy and pass it on to future generations. The project section "Musical comedies" provides comprehensive information about the musical comedies developed by Uzeyir Hajibeyli as a new genre in Azerbaijani music art, including their themes and staging. The "Operas" section highlights the composer’s contributions as the author of the first opera in the East, showcasing the works he created and their significance in Azerbaijani music culture. The project emphasizes Uzeyir Hajibeyli’s exceptional role in the history of statehood, including his historical contributions as the author of the national anthems of both the Azerbaijan SSR and the independent Republic of Azerbaijan. Another important aspect of the project is the presentation of Uzeyir Hajibeyli's activities in the field of journalism; this section includes the full texts of articles, letters, reports, speeches, reviews, and feuilletons. The "Official Documents" section includes the full texts of the decrees related to the composer. The "E-resources" section offers electronic versions of books and articles dedicated to his life and work. The "Bibliography" section provides a bibliography of his works, books devoted to him, author abstracts, collections, and articles. The sections “Photo Gallery”, “Video Gallery”, and “Audio Records” are designed to provide a deeper understanding of the great composer's rich creative legacy. The “Photo Gallery” features rare images of Uzeyir Hajibeyli's life and work, while the “Video Gallery” includes selected scenes from his operas and operettas. The “Audio Records” section contains audio samples of his musical compositions.