If Concordia Orchestra conductor Masatoshi Mitsumoto had any ideas about the music he led Sunday in Gindi Auditorium, he kept them well to himself.
In a program of Bach, Mozart, Bloch and Miklos Rozsa, Mitsumoto for the most part seemed content to beat time without shaping lines, exploiting secondary voices or directing the music toward any particular goal.
He also had the annoying habit of stomping his heels for special emphasis or for cuing the ensemble, which inaccurately suggested that the players were somewhat inept. For their part, however, the 31 instrumentalists mostly played cleanly, directly, acceptably.
In Bach's Concerto in D minor for Two Violins, Mitsumoto emphasized vigor over expressivity, with the soloists, both 18-year-olds, providing contrasting rather than matched tone production. Elisa Barston marshaled plushy, dark sounds, compared with Isabella Lippi's bright wiriness.