"vigorous performance" is a correct and usable phrase in written English.
You can use it when you want to describe someone's energetic or thorough action. For example, "The actor's vigorous performance in the play earned him a standing ovation."
A vigorous performance, then, from a likeable and smart performer who has the wits about him to confess "I don't understand how I'm still here".
Overall, this was a strong, vigorous performance.
But the bandstand held, he recalled, even as Waller turned in a vigorous performance.
They also gave a clear-textured, unmannered and vigorous performance of the Mozart symphony.
After the intermission, Mr. Schwarz led his orchestra in a vigorous performance of the Bruch Third.
He led a brisk, vigorous performance, and the orchestra sounded fine, its odd seating notwithstanding.
Advanced reports suggest a promising young ensemble prepared to give vigorous performances.
It has been a beautifully told story, with sincere and vigorous performances, and with a solid and richly atmospheric production to lend its interest and fascination.
Taking questions this time before a "town meeting" audience, both the candidates put in vigorous performances, but it was Mr. Gore who dominated their exchanges.
To judge from Mr. Gruber's own works and from vigorous performances of Weill that he conducted and sang with the Eos Orchestra last year, the attraction for him may lie in Weill's resistance to being classified.
The student players in Axiom gave Mr. Milarsky and Mr. Adamss, who listened from the balcony) vigorous performances that caught the energy and humor of "Scratchband" and the Chamber Symphony, and the suppleness of the Ives arrangements.
