Commander is a naval rank which is also sometimes used as a military title depending on the individual customs of a given military service. Commander is also used as a rank or title in some organizations outside of the armed forces, particularly in police and law enforcement.

Commander is a rank used in navies but is very rarely used as a rank in armies (except in special forces where it designates the team leader). The title (originally "master and commander") originated in the 18th century to describe naval officers who commanded ships of war too large to be commanded by a Lieutenant but too small to warrant the assignment of a post-captain, or (before about 1770) a sailing-master; the commanding officer served as his own Master. In practice, these were usually unrated sloops-of-war of no more than 20 guns. The Royal Navy shortened "master and commander" to "commander" in 1794; however, the term "master and commander" remained (unofficially) in common parlance for several years. The equivalent American rank master commandant remained in use until changed to commander in 1838. A corresponding rank in some navies is frigate captain. In the 20th and 21st centuries, the rank has been assigned the NATO rank code of OF-4.

Kelly Rowland (born Kelendria Trene Rowland on February 11, 1981) is an American recording artist, songwriter, dancer, actress and television personality. Born in Atlanta, Georgia and raised in Houston, Texas, Rowland rose to fame as one of the founding members of the American R&B girl group Destiny's Child, one of the world's best-selling girl groups of all time.

During the hiatus of Destiny's Child, Rowland released her debut solo album Simply Deep in 2002, which contained influences of alternative-R&B and rock music. It included her joint worldwide number-one single "Dilemma" with rapper Nelly, and the international top-ten hit "Stole". Following the group's disbandment in 2005, Rowland released her second solo effort Ms. Kelly in 2007 and despite being less successful than its predecessor, it included the international hit singles "Like This" and "Work". In 2009, Rowland scored her second worldwide number-one hit with French DJ David Guetta, on his single "When Love Takes Over". Her third solo album Here I Am was released in 2011 and included the UK top-ten hits "Commander" and "Down for Whatever", as well as the US R&B number-one "Motivation".

Pierre David Guetta (7 November 1967), known professionally as David Guetta (French pronunciation: [daˌvid ɡɛˈta]), is a French house music producer and DJ. Originally a DJ at nightclubs during the 1980s and 1990s, he co-founded Gum Productions and released his first album, Just a Little More Love, in 2002. Later, he released Guetta Blaster (2004) and Pop Life (2007). His 2009 album One Love included the hit singles "When Love Takes Over" (featuring Kelly Rowland), "Gettin' Over You" (featuring Chris Willis, Fergie & LMFAO) and "Sexy Bitch" (featuring Akon), the last becoming a top five hit in the United States and all three reaching #1 in the United Kingdom, as well as another internationally known single called "Memories" featuring Kid Cudi which became a top five hit in many countries. Guetta has sold over three million albums and 15 million singles worldwide. He is currently one of the most sought-after music producers. As at 2012 David Guetta is the world's most popular DJ, claiming the #1 poll position of the DJ Mag 100 popularity poll.

Cristiano Ronaldo dos Santos Aveiro,OIH, (born 5 February 1985), commonly known as Cristiano Ronaldo, is a Portuguese footballer who plays as a winger or striker for Spanish La Liga club Real Madrid and is the captain of the Portuguese national team. Ronaldo became the most expensive footballer in history after moving from Manchester United to Real Madrid in a transfer worth £80 million (€93.9 million/$131.6 million). In addition, his contract with Real Madrid, in which he is paid €12 million per year, makes him one of the highest-paid footballers in the world, and his buyout clause is valued at €1 billion as per his contract.

Ronaldo began his career as a youth player for Andorinha, where he played for two years, before moving to C.D. Nacional. In 1997, he made a move to Portuguese giants Sporting Clube de Portugal. Ronaldo's precocious talent caught the attention of Manchester United manager Alex Ferguson, who signed him for £12.24 million (€15 million) in 2003. The following season, Ronaldo won his first club honour, the FA Cup. He also played at Euro 2004 with Portugal and scored his first international goal in the opening game of the tournament against Greece, in addition to helping Portugal reach the final. He was featured in the UEFA Euro All-Star Team of this competition.

Phil Robertson is a studio drummer, having recorded albums for Warner Bros. Records, Polygram, Elektra Records, Atlantic Records, and Electronic Arts, among others.