A musical ensemble is a group of people who perform instrumental or vocal music, typically known by a distinct name. In classical music, trios or quartets either blend the sounds of musical instrument families (such as piano, strings, and wind instruments) or group together instruments from the same instrument family, such as string ensembles or wind ensembles. In jazz ensembles, the instruments typically include wind instruments (one or more saxophones, trumpets, etc.), one or two chordal "comping" instruments (electric guitar, piano, or organ), a bass instrument (electric bass guitar or double bass), and a drummer or percussionist. In rock ensembles, usually called rock bands, there are usually guitars and keyboards (piano, electric piano, Hammond organ, synthesizer, etc.) and a rhythm section made up of a bass guitar and drum kit.

In Western Art music, commonly referred to as classical music, smaller ensembles are called chamber music ensembles. The terms duet, trio, quartet, quintet, sextet, septet, octet, nonet and dectet are used to describe groups of two, three, four, five, six, seven, eight, nine and ten musicians, respectively. A group of eleven musicians, such as found in The Carnival of the Animals, is called either a "hendectet" or an "undectet" (see Latin numerical prefixes). A solo is not an ensemble because it only contains one musician.

Jason Flom is an American music industry executive. He has served as the Chairman and CEO of music labels including Atlantic Records, Virgin Records, and the Capitol Music Group. In 1995, he founded Lava Records. He is also a philanthropist who has supported and championed various political and social causes.

A 2003 feature in The New Yorker called Flom "one of the most successful record men of the past 20 years," known for his "specialty [in] delivering 'monsters'."

Flom is the son of the late legendary corporate attorney Joseph Flom.

As a teenager, Flom played guitar in rock bands in New York. He began his career at Atlantic Records as a field merchandiser, and moved into the A&R department under Atlantic founder Ahmet Ertegun. After signing rock artists including Twisted Sister, Skid Row, White Lion, Stone Temple Pilots and Tori Amos, Flom soon became Atlantic's head of A&R, where he was mentored by Doug Morris.

Flom's leadership in A&R included breaking new artists such as Jewel, Hootie & the Blowfish and Collective Soul. In 1995 he founded his own label, Lava Records, in partnership with Atlantic Records.

Katheryn Elizabeth Hudson (born October 25, 1984), known by her stage name Katy Perry, is an American singer, songwriter and actress. Perry grew up with gospel music, and during her first year of high school she pursued a music career as Katy Hudson, releasing her first studio album called Katy Hudson which failed to chart. She recorded a solo album later, which was never released. After signing with Capitol Music Group in 2007, her fourth record label in seven years, she adopted the stage name Katy Perry.

She first gained recognition with the release of her first mainstream album, One of the Boys in 2008, which spawned three Billboard Hot 100 top-ten songs—"I Kissed A Girl", "Hot n Cold" and "Waking Up In Vegas". Perry supported the album with her Hello Katy Tour. In 2010, her third studio album, Teenage Dream (2010), which topped the Billboard 200 chart, and spawned five number one singles—"California Gurls", "Teenage Dream", "Firework", "E.T." and "Last Friday Night (T.G.I.F.)"—Teenage Dream was the only album (after Michael Jackson's Bad)—to do so, and the first female in history to achieve this milestone. She embarked on the California Dreams Tour, which grossed nearly $60 million worldwide. Perry re-released the album under the name of Teenage Dream: The Complete Confection on March 26, 2012, and the re-release has already spawned the number-one single "Part of Me".