超絶技巧練習曲
Watson spent some years living in the United Kingdom as a touring performer. On 22 October 1951, to celebrate the 140th anniversary of the birth of Franz Liszt, he performed the complete "Transcendental Études" in a concert at the Wigmore Hall. On that occasion he also premiered Humphrey Searle's Piano Sonata, Op. 21, written for the occasion. (The sonata was loosely based on Liszt's Sonata in B minor and has been described as "probably, both the finest and most original piano work ever produced by a British composer".) Watson later recorded the sonata, but the recording was quickly deleted. In 1957 he was able to introduce Searle to his teacher Egon Petri. Watson wrote the sleeve notes for the LP recording of classic Egon Petri performances issued by EMI in 1967 as number 7 in its Great Instrumentalists series.