The crwth ( /ˈkruːθ/ or /ˈkrʊθ/), also called a crowd, is an archaic stringed musical instrument, associated particularly with Welsh music, once widely-played in Europe.

The name crwth is originally a Welsh word, derived from a Proto-Celtic noun *krotto- ("round object") refers to a swelling or bulging out, of pregnant appearance, or a protuberance, and it is speculated that it came to be used for the instrument because of its bulging shape. Other Celtic words for violin also have meanings referring to rounded appearances. In Gaelic, for example, "cruit" can mean "hump" or "hunch" as well as harp or violin. Like several other English loanwords from Welsh, the name is one of the few words in the English language that is written without one of the five standard English vowel letters.

The traditional English name is crowd (or rote), and the variants crwd, crout and crouth are little used today. In Medieval Latin it is called the chorus or crotta. The Welsh word crythor means a performer on the crwth. The Irish word is cruit, although it also was used on occasion to designate certain small harps. The English surnames Crowder and Crowther denote a player of the crowd, as do the Scottish names MacWhirter and MacWhorter.

Stefani Joanne Angelina Germanotta (/ˈstɛfəniː dʒʌrməˈnɑːtə/ STE-fə-nee jurr-mə-NAH-tə; born March 28, 1986), known by her stage name Lady Gaga, is an American singer and songwriter. Born and raised in New York City, she primarily studied at the Convent of the Sacred Heart and briefly attended New York University's Tisch School of the Arts before withdrawing to focus on her musical career. She began performing in the rock music scene of Manhattan's Lower East Side, and was signed with Streamline Records by the end of 2007. During her employment as a songwriter for the record company, her vocal abilities captured the attention of recording artist Akon, who signed her to his label Kon Live Distribution.

Lady Gaga came to prominence as a recording artist following the release of her debut album The Fame (2008), which was a critical and commercial success that topped charts around the world and included the international number-one singles "Just Dance" and "Poker Face". After embarking on the The Fame Ball Tour, she followed the album with The Fame Monster (2009), which spawned the worldwide hit singles "Bad Romance", "Telephone" and "Alejandro". The album's success allowed her to embark on the eighteen-month long Monster Ball Tour, which later became one of the highest-grossing concert tours of all time. Her most recent album Born This Way (2011) topped the charts of most major markets and generated more international chart-topping singles, including "Born This Way", "Judas" and "The Edge of Glory". Besides her musical career, she involves herself with humanitarian causes and LGBT activism.

Adam Richard Wiles (born 17 January 1984), better known by his stage name Calvin Harris, is a Scottish DJ, singer, songwriter, and record producer. His gold-selling debut album, I Created Disco, was released in 2007 and contained the top ten singles "Acceptable in the 80s" and "The Girls". His second studio album, Ready for the Weekend (2009), reached number one in the UK Album Chart and includes the chart-topper "I'm Not Alone", the UK top five hit "Ready for the Weekend", and the singles "Flashback" and "You Used to Hold Me".

A remix album titled L.E.D. Festival was released in July 2010 as a free album in the August issue of Mixmag. Harris is currently working on his third studio album—due for release in 2012—which has produced the singles "Awooga", "Bounce", "Feel So Close", and "Let's Go". He has written and produced records for other recording artists including Kylie Minogue, Sophie Ellis-Bextor, Dizzee Rascal, Rihanna (on the international chart topper "We Found Love"), and Kesha.

Elena Jane Goulding (born 30 December 1986), known professionally as Ellie Goulding, is an English singer-songwriter. In 2010 she became the second artist to both top the BBC's annual Sound of... poll and win the Critics' Choice Award at the BRIT Awards in the same year, following Adele's win of both in 2008. After signing to Polydor Records in 2009, she released her first EP in 2009, An Introduction to Ellie Goulding, followed by her debut studio album Lights in 2010. Her album debuted at number one on the UK Albums Chart and has sold over 650,000 copies in the UK. "Lights" was released in America March 8th 2011, where the title track has been certified platinum by the RIAA (excess of 1 million units sold) .

Goulding is a soprano, and her musical style has been compared to that of Kate Nash, Meiko, Lykke Li and Tracey Thorn.

Goulding was born and brought up in a small town near Hereford, Herefordshire, the second of four children. She began playing the clarinet at the age of nine, and at 14 began learning guitar. She attended Lady Hawkins' School in Kington, where she won a main part in a school production, the Wizard Of Oz, as the scarecrow. She started songwriting at the age of 15 and while in college she won a singing competition.