Original sentence: It wasn't until 1999 that producers Barbra Russell and Ron Sharpe (both of whom had worked with Alex Santoriello in the original Broadway company of Les Miserables (musical)) that the musical officially began readings & workshops, gaining a loyal base of producers
Edited sentence: It wasn't until 1999 that producers Barbara Russell and Ron Sharpe (both of whom had worked with Alex Santoriello in the original Broadway company of Les Miserables (musical)) that the musical officially began readings & workshops, gaining a loyal base of producers