Which term can be interpreted as "sincere" in music notation?

The term "innig" in music notation is often interpreted to mean "sincere" or "heartfelt." It suggests a deep emotional expression, commonly used in the context of performing music that requires an intimate or earnest touch. Composers use this term to invoke a sense of warmth and genuine feeling, allowing musicians to convey the emotional weight of the piece in a sincere manner. The association with sincerity is central to the interpretation of "innig," which is why it is the correct choice in this context.

The other terms, while they each describe certain qualities of music, do not carry the same implication of sincerity. "Gebunden" refers to a sense of connectedness or binding in performance, often related to phrasing. "Lebhaft" indicates liveliness or briskness, suggesting energy rather than emotional depth. "Legerement," meaning lightly or gently, implies a casualness or light touch rather than sincerity. Thus, "innig" stands out as the term closely associated with heartfelt expression.