The Baltimore Symphony Orchestra (BSO) and Music Director Marin Alsop announced several conducting appointments: Markus Stenz as principal guest conductor, Ken Lam as associate conductor for education, Nicholas Hersh as assistant conductor and Michael Repper as the 2014-2015 season BSO-Peabody conducting fellow. German conductor Markus Stenz will begin his three-year tenure as principal guest conductor with the BSO in the 2015-2016 season. He will conduct three weeks each season. Ken Lam recently was appointed Music Director in Charleston.