 Their fourth studio album, "Viva la Vida or Death and All His Friends" (2008), the best-selling album worldwide of 2008, was produced by Brian Eno and released to largely positive reviews, earning three Grammy Awards.In October 2011, Coldplay released their fifth studio album, "Mylo Xyloto", which topped the charts in over 34 countries, was the UK's best-selling rock album of 2011, and received moderately positive reviews.Their sixth album, "Ghost Stories", released in 2014, received mixed reviews and topped several national album charts.