Which term would you use to describe playing a piece musically 'with energy'?

The term that describes playing a piece musically 'with energy' is "con brio." This phrase translates from Italian to "with vigor" or "with spirit," indicating a lively and energetic manner of performance. When musicians are instructed to play con brio, they are encouraged to infuse their playing with enthusiasm, dynamism, and a sense of excitement, making the music feel more vivid and impactful.

The other terms represent different qualities of expression in music. "Comodo" means to play in a comfortable, easy tempo and does not convey the same sense of energy. "Cantabile" suggests a singing style, focusing more on lyrical and expressive playing rather than energy. "Con moto" means "with motion," which can imply a lively tempo, but it is less specific about the energetic quality than "con brio." Thus, "con brio" is the most fitting term for playing with energy.