Josef Gabriel Rheinberger (1839-1901) was a German composer, organist, and teacher, primarily associated with the Romantic music genre. Born in Liechtenstein, he later moved to Germany, where he became renowned for his contributions to sacred and instrumental music. Rheinberger's notable works include his twelve organ sonatas, which are considered significant contributions to the organ repertoire, as well as his choral works and operas. His "Requiem in C minor" and "Mass in E-flat major" showcase his mastery of choral music. Additionally, he composed symphonies, chamber music, and piano pieces, reflecting the rich harmonic language characteristic of the Romantic era. Rheinberger's impact on music extends to his role as a teacher; he served at the Munich Conservatory, influencing a generation of composers, including Max Reger and Hugo Wolf. Although he was not as widely recognized during his lifetime compared to his contemporaries, his music has experienced a revival in the 20th and 21st centuries, appreciated for its lyrical melodies and intricate counterpoint. Rheinberger's work remains an important part of the Romantic music canon, particularly in the realms of organ and choral music.