Which term refers to a performance style that allows for freedom in tempo and rhythm?

The term that refers to a performance style allowing for freedom in tempo and rhythm is "senza misura." This Italian phrase translates to "without measure," indicating a more expressive and flexible approach to pace and timing during a musical performance. Musicians interpret the music based on their artistic judgment rather than strictly adhering to set rhythms or tempos, allowing for a more emotive and nuanced rendition.

In contrast, the other options refer to specific musical terms related to tempo or articulation. "Adagio" refers to a slow tempo, while "allegro" indicates a fast tempo, both of which provide distinct speed guidelines rather than freedom. "Legato" describes a smooth and connected style of playing, focusing on the articulation of notes rather than the overall tempo. Thus, "senza misura" stands out as the only option that encapsulates the concept of flexibility in rhythm and tempo during performance.