Complex sentence: In its history, the band has known many chaotic lineup changes; there is no founding members in the band since 1995, and currently, the longest standing member is singer Timo Kotipelto, who joined in 1994.
Split into simpler sentences: In its history, the band has gone through many chaotic lineup changes and since 1995 there are no founding members of the band that remain. Currently, the longest standing member is singer Timo Kotipelto, who joined in 1994.