"He experimented with the works of Italian Composer Antonio Vivaldi, and numerous Cantatas and organ works... Bach is almost a kind of patron saint for church musicians. All around the world he is recognized as one of the greatest composers that ever lived. He spent his entire life in Germany, and was greatly influenced by the legacy of Martin Luther. Luther himself had been a musician declaring music to be second only to the Gospel itself. Bach was to be the reformer's greatest musical disciple."

"For him, composition was to be involved in the act of creation that was a paled imitation of the creativity of God... Bach said, and I quote, 'The aim and final reason of all music was none else but the glory of God.' And Bach would frequently initial his blank manuscript writings with the markings J.J., which meant in Latin, 'Jesus help me.' And when he finished, he put at the end, S.D.G. Soli Deo Gloria, 'glory to God alone.'"

From The Glory of God Alone: Life of Johann Sebastian Bach

"Soli Deo Gloria" is a phrase derived from the practice of the eminent 17th century musician, Johann Sebastian Bach, who inscribed many of his compositions with the Latin phrase, SOLI DEO GLORIA (to God alone be the Glory).