Quadra is the fifteenth studio album by Brazilian metal band Sepultura, released on February 7, 2020. It is a concept album based on numerology, the number four and its significance as depicted on Quadrivium. The band went to Sweden to work with producer Jens Bogren for the recording of Quadra. The album is the band's most successful record since 1998's Against, charting in 17 countries and entering the top 20 in seven countries (eight, considering the UK Rock & Metal Albums Chart). It is also their most successful album in Germany and Switzerland to date, exceeding the chart positions of Roots (1996), with positions number five and number 13, respectively.