Final answer:
In Mendelssohn's Hebrides Overture, the first subject appears in a transformed variation during the coda. This variation is similar to how film scores can change a scene's perception by the audience.
Step-by-step explanation:
During the coda with a new tempo in Mendelssohn's Hebrides Overture, the first subject reappears in a transformed variation. The re-emergence of the first subject in classical music, such as Mendelssohn's work, often involves variations that provide continuity while also offering contrast and interest. This technique allows the theme to evolve throughout the piece, reflecting different emotions and perspectives, much like a film score alters the viewer's perception of a scene. In the case of the Hebrides Overture's first subject, its variation in the coda can be likened to a change in the movie soundtrack that might shift the atmosphere from tense to uplifting, or vice versa.