Century Child is the fourth studio album of Finnish symphonic metal band Nightwish, released in 2002 by Spinefarm Records. It is the first album with current bassist and male vocalist Marco Hietala. The album is a notable departure from previous Nightwish releases, lyrically and musically. The overall musical scheme is slower and darker than the more light-hearted likes of Oceanborn and Wishmaster, with more emphasis on ambience and melodic leanings. It contains orchestral backing, an ethereal production, softer and less operatic vocal work from Tarja Turunen and vocals by Marco in songs like "Ever Dream", "Slaying the Dreamer", "Dead to the World", "Feel for You" and "The Phantom of the Opera"; furthermore, the lyrics depict the strongest concept album undercurrents yet. This could also be considered one of Nightwish's darkest albums. The album received strong positive reviews. Century Child is also the first album on which guitarist Emppu Vuorinen tunes his guitar to D tuning in order to match Hietala's D-tuned bass.