Complex sentence: In 1996 Whilst working on a new album, Gavin Whyte left the band and was replaced by longtime fan Lee Havok (real name Lee Pinkney) and it was with this line-up that undertook a tour of Japan.
Split into simpler sentences: In 1996 Whilst working on a new album, Gavin Whyte left the band and was replaced by longtime fan Lee Havok (real name Lee Pinkney). It was this line-up that undertook a tour of Japan.