Original sentence: In the 1950s Průchová became a member of the Karel Krautgartner Orchestra and one of the most successful participants of the Czechoslovak song competition Hledáme písničku pro všední den (In Search of a Song for the Weekday)
Edited sentence: In the 1950s, Průchová — as a member of the Karel Krautgartner Orchestra — became one of the most successful participants of the Czechoslovak song competition Hledáme písničku pro všední den (In Search of a Song for the Weekday)