There are also recitals using the Clementi pianoforte and performances based on her works. By the late 1700s, the pianoforte became more popular as an instrument for performance. Fiamingo has a degree in pianoforte and studies nutrition at the University of Catania. He lectured, sang, and performed on the pianoforte. Grainer received his teaching and performing diploma for pianoforte in December 1949. He wrote a critical research on Kaufmann's theory on vibrations of the pianoforte string. In the 18th century, the pianoforte was invented. Kalkbrenner, although of German birth, became the ranking head of the modern French pianoforte school. Her other principal qualification was LRAM in pianoforte. It includes a stripped-back, slowed-down version of "Never Gonna Give You Up" accompanied by pianoforte. A rose-wood pianoforte should be left with keys visible. He is well known as "The Father of the Pianoforte". She served on the jury of the Leeds International Pianoforte Competition in 1966. A set of his "Variations for the Pianoforte" was lithographed by Weber himself. Leeds is also home to the Leeds International Pianoforte Competition which is regarded highly.