A series of little books of short carefully graded folk tunes beginning with the simplest passages and progressing to more difficult leaps, rhythms, chromatics, and modulations. The later books introduce two-part sight singing. The respected English choral conductor, pedagogue, and composer, William Gillies Whittaker (1876-1944) was well-known as a Bach conductor and scholar, and edited various instrumental works of the 17th and 18th centuries. He was editor of the series of Bach's cantatas with English texts by C. Sanford Terry, published by Oxford University Press. The respected English choral conductor, pedagogue, and composer, William Gillies Whittaker (1876-1944) was well-known as a Bach conductor and scholar, and edited various instrumental works of the 17th and 18th centuries. He was editor of the series of Bach's cantatas with English texts by C. Sanford Terry, published by Oxford University Press.