A virtuoso is a person that is highly skilled in music or another artistic form. Which means that a piano virtuoso is a person that is highly skilled in playing the piano specifically.
A "piano virtuoso" is the correct term.
Piano
Sergei Rachmaninoff (Rachmaninov)
Rubinstein
He was a piano virtuoso and you know how those piano virtuosos componse good compositions. He was rooted in the baroque and classical masters. You have to hear some of his compositions to feel this.
Franz Liszt is known as the virtuoso pianist of the romantic era. His exceptional technical skills and innovative performances revolutionized piano playing during the 19th century. Liszt's contributions to the piano repertoire and his influence on future generations of pianists solidify his reputation as one of the greatest pianists in history.
Yes Kesha plays guitar. She is considered a virtuoso. She is a clasically trained guitarist. She also plays piano violin and trumpet.
virtuoso
The Christian Virtuoso was created in 1690.
A Virtuoso's Collection was created in 1842.
The virtuoso girl played a symphony from Mozart.
Virtuoso is singular, the plural form is virtuosi.