Endless Forms Most Beautiful is the eighth studio album by the Finnish symphonic metal band Nightwish. It was released on 25 March 2015 in Japan, 27 March in Argentina and most of Europe, 30 March in the UK and 31 March in the US. The album is the band's first featuring singer Floor Jansen and the first with Troy Donockley as a full-time member. It was also the first without drummer Jukka Nevalainen, who took a break from the band due to severe insomnia. Drumming was provided by Kai Hahto of Wintersun and Swallow the Sun.