Complex sentence: The group drastically changed their style in 2005 with their comeback album "Never Gone", which is an adult contemporary record featuring only live instruments, a departure from their previous pop sound that features a lot of synthesizer.
Split into simpler sentences: The group drastically changed their style in 2005 with their comeback album "Never Gone". It is an adult contemporary record featuring only live instruments, a departure from their previous pop sound that features a lot of synthesizer.