Tuesday night, Hajime Teri Murai, music director of the Peabody Symphony Orchestra, no doubt will bring to light renewed appreciation of what he considers an under-appreciated “Symphony No. 7 in E” by Gustav Mahler.

“The seventh is the synthesis of a lot of styles, concepts and textures [Mahler] used up to that point,” Murai said. “It is probably as much autobiographical as his sixth, which ends tragically. The seventh comes to an optimistic conclusion.”