Question: In 1998, Which member left the group that released the album "Nature's Symphony in 432"?
Sentence (from "Northern Lights (bluegrass band)"): Guitarist Bill Henry, who joined the band in 1982 assumed the leadership role and Northern Lights continue to play without interruption as a quintet, consisting of two generation of musicians - Bill Henry, John Daniel and Alex MacLeod as well as young players Eric Robertson and Mike Barnett.
Relevant evidence: No