Throughout the 18th century, the appreciation of Johann Sebastian Bach's music was mostly limited to distinguished connoisseurs. The 19th century started with publication of the first biography of the composer and ended with the completion of the publication of all of Bach's known works by the Bach Gesellschaft. A Bach Revival had started from Mendelssohn's performance of the St Matthew Passion in 1829. Soon after that performance, Bach started to become regarded as one of the greatest composers of all times, if not the greatest, a reputation he has retained ever since. A new extensive Bach biography was published in the second half of the 19th century.