 While Marcus was the legal owner of the publishing company, it was his underage sons, Julius, Isidore, and Jay, who ran the show. Julius was a performer who performed with minstrel troops from an early age on. And Isidore, you know, was both a musician but also a composer. And then the youngest was not musical, but he won a competition. And in the competition that he won, his brothers encouraged him to select the printing press. And then eventually they started printing music.