Complex sentence: They soon hired a music director, Weston Gales, a 27-year-old church organist from Boston, who led the first performance of the reconstituted orchestra on February 26,1914, again at the old Detroit Opera House.
Split into simpler sentences: They soon hired the orchestra's first music director, Weston Gales, a 27-year-old church organist from Boston. The orchestra's first performance was held on February 26,1914 at the old Detroit Opera House.