Simplify the following text for a Grade 12 native English-speaking person.
Original: He was prolific , organizing at least fifty recording sessions as a leader during his recording career , and appeared as a sideman on many other albums , notably with trumpeter Miles Davis and pianist Thelonious Monk .
Simplified: He made about fifty recordings as a bandleader , and appeared on many other albums , for example with trumpeter Miles Davis and pianist Thelonious Monk .