Carl Philipp Emanuel Bach, who lived from 1714 to 1788, was the second surviving son of Johann Sebastian Bach and a major composer between the Baroque and Classical periods. The Wq. number attached to this piece comes from Alfred Wotquenne's catalogue of his works, published in the early twentieth century. Short excerpts of public domain classical recordings now circulate widely online, where brief dramatic passages are reused as background music, transition cues and ironic formal scoring for everyday clips.