Louis Vierne was born in Poitiers nearly blind due to congenital cataracts, but at an early age was discovered to have an unusual gift for music.
After completing school in the provinces, Louis Vierne entered the Paris Conservatory. From 1892, Vierne served as an assistant to the organist Charles-Marie Widor at the church of Saint-Sulpice in Paris. Vierne subsequently became principal organist at the cathedral of Notre-Dame de Paris, a post he held from 1900 until his death in 1937.
Vierne had a life that was physically and emotionally very difficult, with severe spiritual trials that are reflected in much of his music. His congenital cataracts did not make him completely blind, but he was what would be called today "legally blind." Early in his career, he composed on outsized manuscript paper, using "a large pencil" as his friend Marcel Dupré described. Later in life, as his already limited sight continued to diminish, he resorted to Braille to do most of his work. Moreover, he was deeply affected by a separation and subsequent divorce from his wife, and he lost both his brother René and his son Jacques to the battlefields of World War I A street accident in Paris caused him to badly fracture his leg, and it was briefly thought his leg would need to be amputated. The leg was saved, but his recovery, and the task of completely re-learning his pedal technique, took a full year during one of the busiest times of his life. Despite his difficulties, however, his students uniformly described him as a kind, patient and encouraging teacher. Among his pupils were Lili Boulanger, Nadia Boulanger, Marcel Dupré and André Fleury Vierne suffered either a stroke or a heart attack (eyewitness reports differ) while giving his 1750th organ recital at Notre-Dame de Paris on the evening of 2 June 1937. He had completed the main concert, which members of the audience said showed him at his full powers—"as well as he has ever played." Maurice Duruflé, another major French organist and composer, was at his side at the time of his death.
Vierne had an elegant, clean style of writing that respected form above all else. His harmonic language was romantically rich, but not as sentimental or theatrical as that of his early mentor César Franck. Like all of the great fin de siècle French organists, Vierne's music was very idiomatic for his chosen instrument and has inspired most of the great Parisian organist-composers who followed him.

Johann Sebastian Bach was a German composer and musician of the Baroque period. He enriched established German styles through his skill in counterpoint, harmonic and motivic organisation, and the adaptation of rhythms, forms, and textures from abroad, particularly from Italy and France. Bach's compositions include the Brandenburg Concertos, the Goldberg Variations, the Mass in B minor, two Passions, and hundreds of cantatas. His music is revered for its technical command, artistic beauty, and intellectual depth.

Bach's abilities as an organist were highly respected during his lifetime, although he was not widely recognised as a great composer until a revival of interest in and performances of his music in the first half of the 19th century. He is now generally regarded as one of the greatest composers of all time.

Johann Baptist Joseph Maximilian Reger (19 March 1873 – 11 May 1916) was a German composer, conductor, pianist, organist, and academic teacher. Born in Brand, Bavaria, Reger studied music in Munich and Wiesbaden with Hugo Riemann. From September 1901 he settled in Munich, where he obtained concert offers and where his rapid rise to fame began. During his first Munich season, Reger appeared in ten concerts as an organist, chamber pianist and accompanist. He continued to compose without interruption. From 1907 he worked in Leipzig, where he was music director of the universityuntil 1908 and professor of composition at the conservatory until his death. In 1911 he moved to Meiningen where he got the position of Hofkapellmeister at the court of Georg II, Duke of Saxe-Meiningen. In 1915 he moved to Jena, commuting once a week to teach in Leipzig. He died in May 1916 on one of these trips of a heart attack at age 43.
He had also been active internationally as a conductor and pianist. Among his students were Joseph Haas, Sándor Jemnitz, Jaroslav Kvapil, Ruben Liljefors, George Szell and Cristòfor Taltabull.
Reger was the cousin of Hans von Koessler.

César Franck was simultaneously a child prodigy and a late bloomer. His parents quickly discovered his enormous talent, but they were mostly interested in the money and fame that he might generate. Because of this, he was presented as a piano virtuoso, without a focus on composition. Unfortunately, his virtuoso career was less promising then they had hoped, and he started earning his money more as a teacher and organist. Composing stayed in the background, but in the mean time he did get some notable students, such as Henri Duparc. After a while, a sort of "Franck school" of students arose, albeit against his will, who affectionately called him ‘Pater seraphicus’. It was not until he was 50 before he started to receive some acclaim as a composer, and from his 52nd he started a very prolific period, lasting until his death at the age of 68.
Nowadays, Franck is mostly known for his instrumental music, peaking at the famous Violin Sonata in A. Besides this work,, his small collection of organ works was particularly influential.