Complex sentence: At the age of ten, Kissin made his debut performing Mozart's Piano Concerto No.20 in D minor with the Ulyanovsk Symphony Orchestra and the year after that he gave his first recital in Moscow.
Split into simpler sentences: At the age of ten, Kissin made his debut performing Mozart's Piano Concerto No.20 in D minor with the Ulyanovsk Symphony Orchestra. The year after that he gave his first recital in Moscow.