Albert Schweitzer was a German (writing in French also) theologian, organist, philosopher, physician, and medical missionary. As well as his important theological work (he depicted Jesus as literally believing the end of the world was coming in his own lifetime), he developed various theories on music, in particular the work of J.S. Bach. He explained figures and motifs in Bach's Chorale Preludes as painter-like tonal and rhythmic imagery illustrating themes from the words of the hymns on which they were based. They were works of devotional contemplation in which the musical design corresponded to literary ideas, conceived visually. Schweitzer's interpretative approach greatly influenced the modern understanding of Bach's music. His pamphlet "The Art of Organ Building and Organ Playing in Germany and France" (1906) effectively launched the 20th century Orgelbewegung, which turned away from romantic extremes and rediscovered baroque principles. In addition to his contribution to music theory, Schweiter also made many seminal recordings of Bach's organ recitals. In mid-December 1935 he began to record for Columbia Records on the organ of All Hallows, Barking-by-the-Tower, in London - the recordings above. He developed a particular technique for recording the performances of Bach's music known as "The Schweitzer Technique" which involved a new positioning of microphones. (Wikipedia)