What is the meaning of "ausdruck" in music context?

In a musical context, "ausdruck" is a German term that translates directly to "expression." It is commonly used in sheet music to indicate that a performer should play or sing with a particular emotional quality or interpretative depth. This pertains to the overall feeling conveyed in the performance, often encompassing dynamics, phrasing, and emotional nuances that go beyond the basic notes.

Understanding "ausdruck" helps performers recognize that music is not just about accurately playing the notes but also about conveying the intended emotional content, which can significantly impact the audience's experience. The other terms listed—tempo, loudness, and clarity—refer to specific aspects of musical performance but do not encompass the broader emotional interpretative aspect that "ausdruck" represents.