Beatrice Pettit was one of many accomplished female brass musicians who made a career out of their music in the 19th century and early 20th century. She started to perform at the age of 15, and her first appearance in public was in November 1888. She went on to study at the Guildhall School of Music, and became a soloist on cornet with a number of orchestras, bands and entertainment troupes over the years. She was also accomplished as a pianist and soprano vocalist. She was particularly associated with Rosabel Watson's Æolian Ladies' Orchestra, the English Ladies' Orchestral Society, and Eleanor Clauson's Ladies' Pompadour Band.