The term 'A Direction in Music' can be summarized by three crossword solutions: PRESTO (6 letters), Tacet (5 letters), and ARCO (4 letters). PRESTO is an Italian word meaning 'QUICKLY' or 'FAST', and is used as a direction in music to indicate that the piece should be played at a FAST tempo. Tacet is a Latin word meaning 'SILENT' or 'MUTE', and is used as a direction in music to indicate that a certain instrument should remain SILENT for a certain section of the piece. Lastly, ARCO is an Italian word meaning 'BOW', and is used as a direction in music to indicate that the string instruments should be played with a BOW rather than plucked.