The term stereophonic sound or, more commonly, stereo, refers to any method of sound reproduction in which an attempt is made to create an illusion of directionality and audible perspective. This is usually achieved by using two or more independent audio channels through a configuration of two or more loudspeakers in such a way as to create the impression of sound heard from various directions, as in natural hearing. Thus the term "stereophonic" applies to so-called "quadraphonic" and "surround-sound" systems as well as the more common 2-channel, 2-speaker systems. It is often contrasted with monophonic, or "mono" sound, where audio is in the form of one channel, often centered in the sound field (analogous to a visual field). Stereo sound is now common in entertainment systems such as broadcast radio and TV, recorded music and the cinema.

The word stereophonic derives from the Greek "στερεός" (stereos), "firm, solid" + "φωνή" (phōnē), "sound, tone, voice" and it was coined in 1927 by Western Electric, by analogy with the word "stereoscopic".

Adam Noah Levine (born March 18, 1979) is an American singer-songwriter and musician, best known as the front man and guitarist for the pop rock band Maroon 5. He is also a coach on the American talent show The Voice.

Levine was born in Los Angeles to Fred and Patsy (née Noah) Levine. His uncle is journalist and author Timothy Noah. He has a brother, Michael, and a sister, Julia. When he was six years old, he made the winning shot of his local YMCA championship basketball game (on a team his father coached) with no time left on the clock. He has said that the incident changed his life and gave him the confidence to be successful.

Levine attended French Woods Festival of the Performing Arts Camp (Hancock, NY) with best friend Jesse Carmichael, guitar player of the band known at that time as Kara's Flowers. He graduated from Brentwood School in 1997.

Levine has Jewish ancestry on both sides of his family (his father and maternal grandfather were Jewish), and considers himself Jewish, though according to The Jewish Chronicle, who interviewed Levine, he "has rejected formal religious practice for a more generalized, spiritual way of life". He chose not to have a Bar Mitzvah as a child.

Eduard Marian Ilie (born 29 June 1986 in Bucharest), better known as Edward Maya, is a Romanian musician, producer, performer, and composer. He graduated from George Enescu Music High School in Bucharest and is currently a final year student at the Bucharest Conservatory.

In and around 2006, Maya worked with many Romanian artists such as Akcent, Vika Jigulina, Blaxy Girls, DJ Sava, DJ Rynno and Liviu Hodor. He worked also on the song Tornerò, which was performed by Mihai Trăistariu in the Eurovision Song Contest 2006. He added in an interview on Beat-Town.com that this song "was the beginning of my career"

In the summer of 2009, Maya launched his first song as an artist, "Stereo Love", reaching number 2 in the Romanian singles charts. Later that year, "Stereo Love" became a hit in clubs all over the world. While this success was followed by concerts worldwide, the song entered the top-5 singles charts in Austria, Denmark, Finland, France, Germany, Ireland, Italy, the Netherlands, Norway, Spain, Sweden, Switzerland, UK. "Stereo Love" has received over 173 million YouTube views since August 2009, for just one video.

Vika Jigulina (born Victoria Corneva, February 18, 1986) is a Romanian (from Moldova) music producer, singer, and DJ. She was born in Cahul and graduated from the Rachmaninov School of Music. In 2000, she moved to Timişoara, Romania, where she still lives, and continued her studies there. She worked in various clubs in Timişoara and eventually Bucharest. She landed a weekly show on the Romanian station Radio Deea and later on with VIBE FM that gave her national exposure and fame. In 2010 she became a Romanian citizen.

Jigulina has made mixes with Steve Murrano, ATB, Tomcraft, DJ DOX, Steve Angello, Sebastian Ingrosso, and other Romanian artists. She is the vocalist in the international dance hit "Stereo Love" by Romanian producer and musician Edward Maya. She is also touring with Edward Maya in Canada in March 2011."Stereo Love" won the Billboard Music Awards 2011 for the Top Dance Song. Vika's 4th single, "Mono In Love", is scheduled for release in early 2012 featuring Edward Maya.

Jigulina is currently working with Maya on his debut studio album The Stereo Love Show.

Preta Gil (Portuguese pronunciation: [ˈpretɐ ˈʒiw], born August 8, 1974) is a Brazilian singer and actress. She is the daughter of Gilberto Gil, a famous musician and former Minister of Culture in Brazil.

In 1974, Preta Gil's father, the famous singer Gilberto Gil, went to a government office to register his daughter's name after his own mother's name. Upon arrival, the clerk informed him he was unable to register Preta as a name for his daughter. Gilberto Gil began to protest, "Why not? There's Bianca (White), Blanca (White), Clara (Clear) and Rosa (Rose) . . . why can't Preta (Black) be a name?". The clerk conceded, only if the child was registered along with a Catholic name. So Preta Gil was registered "Preta Maria".

Preta lived in Rio, and at the age of one, she moved to Salvador. Her mother, Sandra, soon after had another daughter named "Maria". Gil always believed it was lack of creativity. She had an older brother, "Pedro", who was born in London, at the time of her father's famous exile from Brazil during the Military Dictatorship, along with friend and singer Caetano.