[1] She was the eldest child of Frances Morse Burrage Lang, an amateur singer, and Benjamin Johnson "B.

After demonstrating an early talent for composition, B. J. saw to it that Margaret received lessons in harmony, counterpoint and later, orchestration.

In 1886, at the age of 19, Margaret, accompanied by her mother, traveled to Munich to study violin with Franz Drechsler and Ludwig Abel and counterpoint and fugue with Victor Gluth.

After returning to Boston, Margaret studied orchestration and composition with George Whitefield Chadwick, who was then professor at the New England Conservatory.

Between 1927 and 1939, she anonymously wrote, published and printed devotional pamphlets entitled "Messages from God" which were distributed throughout the United States and as far as Egypt.

Using her own money to fund the project, Margaret recorded in an autobiographical note that over 6,000 copies of these books were produced and sent throughout the world, free of charge to the recipient.

Margaret also holds the record for the longest consecutive subscriber to the Boston Symphony Orchestra, totaling 91 years.

Her Irish Love Song was a particular favorite among audiences and was recorded by several famous singers, including Ernestine Schumann-Heink and Alma Gluck.

[3] Many of the autograph copies of Margaret's songs can be found in the Arthur P. Schmidt papers in the Library of Congress.