What is NOT true about Franz Liszt's performance career?

Franz Liszt was primarily recognized as one of the greatest pianists of the Romantic era. His performances on the piano were marked by extraordinary technical skill and emotional depth, earning him widespread acclaim. While he may have had a basic proficiency in other instruments, such as the violin, his fame and legacy are firmly rooted in his accomplishments as a pianist.

Liszt's public concerts were a significant aspect of his career, and he was known for the innovative approach he brought to piano performance. He often introduced new ideas in terms of both the interpretative aspects of piano music and the concert experience itself, such as the concept of the solo recital. These contributions have solidified his reputation as a leading figure in the evolution of piano performance.

Thus, stating that Liszt was equally adept at performing on the violin misrepresents the focal point of his musical career, which was predominantly centered around the piano. This distinguishes the correct answer clearly from the true aspects of his performance career.