Nicholas McGegan has been working in St. Louis for more than 40 years, and leading concerts with the St. Louis Symphony Orchestra for 35 years! He spoke with John Clare about the Bach “family reunion” featured this weekend at Powell Hall: The father, J.S. Bach, will be dressed in his courtly finest for two Brandenburg Concertos featuring solo performances from members of the SLSO. His son, C.P.E. Bach, will wear bolder colors, bursting at the seams in an energetic sinfonia and a virtuosic cello concerto, featuring the SLSO’s Yin Xiong. Saturday night’s concert will be simulcast on Classic 107.3!