Dan Parry is a British audio engineer. His career began back in the summer of 2001, when shortly after college he landed a job working at Soul II Soul Studios in Camden Town, before joining Metropolis Group in 2004.

After 2 years in a training position, Dan became an assistant engineer working mainly with double Grammy award winning mix engineer, Tom Elmhirst. Dan spent the next four years learning under Tom and working with artists such as Amy Winehouse, Adele, and Mark Ronson.

In 2009, Dan co-created the i-Mixing service. An online service offered by Metropolis Studios, providing low cost mixing usually to unsigned artists. The service utilises dead time in the studios coupled with the mixing skills of the facility's in-house and assistant engineers. The service brings affordable mixing services carried out in a leading studio to people who might not normally have the budget to mix in such a facility. In 2010, Dan was nominated for his first ever Grammy award for his involvement on Lady Gaga's "The Fame Monster" album. From the start of 2011 Dan became the first engineer to join the newly created Metropolis Management roster.

Jessica Ellen Cornish (born 27 March 1988), better known by her stage name Jessie J, is an English singer and songwriter. Born and raised in London, she studied at the BRIT School before signing with Gut Records and striking a songwriting deal with Sony/ATV Music Publishing where she wrote for artists such as Chris Brown and Miley Cyrus.

Signed with Universal, Jessie J came to prominence following the release of her debut single "Do It Like a Dude" which peaked at number two on the UK Singles Charts. After scoring her first number one in the United Kingdom, France, Ireland and New Zealand with the song "Price Tag", she released her debut album Who You Are (2011) which charted at number two in the UK. Other releases from the album include "Nobody's Perfect", "Who's Laughing Now" and "Who You Are" which charted within the top 20 in the UK but the release of fifth single "Domino" spawned international chart success, peaking at number 6 on the Billboard Hot 100 in the US, and becoming her second UK number one. Aside from her musical career, Jessie J is currently a coach and mentor on television show The Voice UK.

Bonnie Lynn Raitt (born November 8, 1949) is an American blues singer-songwriter and a renowned slide guitar player. During the 1970s, Raitt released a series of acclaimed roots-influenced albums which incorporated elements of blues, rock, folk and country, but she is perhaps best known for her more commercially accessible recordings in the 1990s including "Nick of Time", "Something to Talk About", "Love Sneakin' Up on You", and the slow ballad "I Can't Make You Love Me". Raitt has received nine Grammy Awards in her career and is a lifelong political activist.

Raitt, the daughter of Broadway musical star John Raitt and his first wife, pianist Marjorie Haydock, began playing guitar at an early age, something few of her high school female friends did. Later she would become famous for her bottleneck-style guitar playing. "I had played a little at school and at camp", she later recalled in a July 2002 interview. The camp Raitt refers to is Camp Regis-Applejack, located in the heart of the Adirondacks.