Georg Joseph Vogler, also known as Abbé Vogler (June 15, 1749 – May 6, 1814), was a German composer, organist, teacher and theorist. In a long and colorful career extending over many more nations and decades than was usual at the time, Vogler established himself as a foremost experimenter in baroque and early classic music. His greatest successes came as performer and designer for the organ at various courts and cities around Europe, as well as a teacher, attracting highly successful and devoted pupils such as Carl Maria von Weber. His career as a music theorist and composer however was mixed, with contemporaries such as Mozart believing Vogler to have been a charlatan. Despite his mixed reception in his own life, his highly original contributions in many areas of music (particularly musicology and organ theory) and influence on his pupils endured, and combined with his eccentric and adventurous career, prompted one historian to summarize Vogler as "one of the most bizarre characters in the history of music".