T. Rex were a British rock band, formed in 1967 by singer/songwriter and guitarist Marc Bolan. The band formed as Tyrannosaurus Rex, releasing four folk albums under the name. Tony Visconti (their producer for several albums) claimed in a documentary on the band that he had taken to using the abbreviated term "T.Rex" as a shorthand, something that initially irritated Bolan, who gradually came around to the idea and officially shortened the band's name to "T.Rex" at roughly the same time they started having big hits (shortly after going electric).

In the 1970s, the band had reached success with glam rock hits like "Jeepster", "Get It On", "Ride a White Swan", "20th Century Boy", "Children of the Revolution", "Hot Love", "Telegram Sam", and "Metal Guru".

After earning success in the early and mid-1970s, the band broke up after Bolan was killed in a 1977 car accident.

Marc Bolan founded Tyrannosaurus Rex in August 1967. After a solitary performance as a four-piece at the Electric Garden in Covent Garden, the group immediately broke up. Bolan retained the services of percussionist Steve Peregrin Took and the duo began performing acoustic material with occasional homages to Gene Vincent and Eddie Cochran. The combination of Bolan's acoustic guitar and distinctive vocal style with Took's bongos and assorted percussion—which often included children's instruments such as the Pixiphone—earned them a devoted following in the thriving underground scene. BBC Radio One Disc jockey John Peel championed the band early in their recording career. Peel later appeared on record with them, reading stories written by Bolan. Another key collaborator was producer Tony Visconti, who went on to produce the band's albums well into their second, glam rock phase.

Marc Bolan (born Mark Feld; 30 September 1947 – 16 September 1977) was an English singer-songwriter, guitarist and poet. He is best known as the frontman of glam rock group T. Rex.

Bolan grew up in post-war Hackney, northeast London, the son of Phyllis Winifred (née Atkins) and Simeon Feld, a lorry driver. His father was Jewish (of Russian and Polish origin) and his mother was from a Christian background. Later moving to Wimbledon, southwest London, he fell in love with the rock and roll of Gene Vincent, Eddie Cochran, Arthur Crudup and Chuck Berry^{[citation needed]} and was considered a mod because of dress, hanging around coffee bars such as the 2 I's in Soho.^{[citation needed]} He appeared as an extra in an episode of the television show Orlando, dressed as a mod. At the age of nine, Bolan was given his first guitar and began a skiffle band. While at school, he played guitar in "Susie and the Hoops," a trio whose vocalist was a 12-year old Helen Shapiro. At 15, he left school "by mutual consent".^{[citation needed]}

Jason Mraz ( /məˈræz/; born June 23, 1977 in Mechanicsville, Virginia) is an American singer-songwriter. Mraz released his debut album, Waiting for My Rocket to Come, which contained the hit single "The Remedy (I Won't Worry)", in 2002, but it was not until the release of his second album, Mr. A-Z, in 2005, that Mraz achieved major commercial success. The album peaked at number five on the Billboard 200 and sold over 100,000 copies in the US. In 2008, Mraz released his third studio album, We Sing. We Dance. We Steal Things. The album debuted at number three on the Billboard 200 and was a commercial success worldwide, peaking in the top ten of many international charts.

Mraz's international breakthrough came with the release of the single "I'm Yours" from the album We Sing. We Dance. We Steal Things. The single peaked at number six on the Billboard Hot 100, giving Mraz his first top ten single. The song was on the Hot 100 for 76 weeks, beating the previous record of 69 weeks held by LeAnn Rimes' "How Do I Live". The song was a huge commercial success in the US, receiving a 5x platinum certification from the RIAA for sales of over five million. The song was successful internationally, topping the charts in New Zealand and Norway and peaking in the top ten of multiple international charts.

Peter Gene Hernandez (born October 8, 1985), better known by his stage name Bruno Mars, is an American singer-songwriter and record producer. Raised in Honolulu, Hawaii by a family of musicians, Mars began making music at a young age. He performed in various musical venues in his hometown throughout his childhood. He graduated from high school and then moved to Los Angeles, California to pursue a musical career. Mars produced songs for other artists, joining production team The Smeezingtons.

Mars had an unsuccessful stint with Motown Records, but then signed with Atlantic Records in 2009. He became recognized as a solo artist after lending his vocals and co-writing the hooks for the songs "Nothin' on You" by B.o.B, and "Billionaire" by Travie McCoy. He also co-wrote the hits "Right Round" by Flo Rida featuring Ke$ha, and "Wavin' Flag" by K'naan. In October 2010, he released his debut album, Doo-Wops & Hooligans. Anchored by the worldwide number-one singles "Just the Way You Are" and "Grenade", the album peaked at number three on the Billboard 200. Mars was nominated for seven Grammys at the 53rd Grammy Awards, winning Best Male Pop Vocal Performance for "Just the Way You Are".