Hits the mark; in the popular fashion. This seemingly very modern expression actually dates from the mid-nineteenth century, when it referred to running very accurately within a fixed channel, or groove. In the 1930s the term became jazz slang for performing very well and also gave rise to groovy, for splendid. Then it probably alluded to a phonograph needle running in the groove of a recording. In subsequent decades the term began to die out, although pop singer Madonna recorded “Get into the Groove” in the late 1980s.