Final answer:
The second subject in Mendelssohn's Hebrides Overture is introduced with a legato articulation, creating a smooth and connected transition in the music.
Step-by-step explanation:
The second subject in Mendelssohn's Hebrides Overture is introduced with a legato articulation. Legato, which means 'tied together' in Italian, indicates that the musical notes are played smoothly and connectedly. In this particular piece, the transition to the second subject with a legato articulation creates a contrast to the lively and flowing first theme. This musical choice enhances the expressiveness and helps to shape the overall structure of the Overture.