Patrick Bruders began touring with Down, replacing a musician who was also the bassist for the band Pantera, and is the current bassist for what band?
Patrick Bruders:  He began touring as live bassist with heavy metal supergroup Down in early 2011, replacing former bassist Rex Brown, before being added as a permanent member, performing bass duties live and in the studio. Rex Brown: Rex Robert Brown (born July 27, 1964) is an American musician and author, who is best known as having been the longtime bassist for the Grammy-nominated, platinum-selling, now defunct band Pantera (1982–2003). Rex Brown:  He is a former member of Down (2001–2011), and is currently the bassist for the band Kill Devil Hill.
Kill Devil Hill