David Richard Campbell (born February 7, 1948) is an arranger, composer and conductor. He has worked on over 450 gold and platinum albums including 21 (Adele), Futuresex/Lovesounds (Justin Timberlake), The 2nd Law (Muse), Invincible (Michael Jackson), Spirit (Leona Lewis), Aaliyah (Aaliyah), Fallen and The Open Door (Evanescence), Meteora (Linkin Park), B'Day (Beyoncé), Bangerz (Miley Cyrus), The Astonishing (Dream Theater), and various albums by his son Beck.