Mariah Carey (born March 27, 1970) is an American singer, songwriter, record producer, and actress. She made her recording debut in 1990 under the guidance of Columbia Records executive Tommy Mottola, and released her self-titled debut studio album, Mariah Carey. The album went multi-platinum and spawned four consecutive number one singles, on the U.S. Billboard Hot 100 chart. Following her marriage to Mottola in 1993, a series of hit records, including Emotions (1991), Music Box (1993) and Merry Christmas (1994), established her position as Columbia's highest-selling act. Daydream (1995), made music history when the second single, "One Sweet Day" a duet with Boyz II Men, spent a record sixteen weeks on top of the Billboard Hot 100, and remains the longest running number one song in US chart history. During the recording of the album Carey began to deviate from her pop background, and slowly traversed into R&B and Hip-hop. After her separation from Mottola, this musical change was evident with the release of Butterfly (1997).

Gavin Shane DeGraw (born February 4, 1977) is an American musician and singer-songwriter. He is known for his songs "Chariot", "Follow Through", "I Don't Want to Be" (which has been featured as the theme song for the television drama series, One Tree Hill since 2003), "In Love with a Girl", and "Not Over You".

DeGraw grew up in the Catskills in South Fallsburg, New York. His mother, Lynne (Krieger), was a detox specialist, and his father, Wayne DeGraw, was a prison guard; he referenced his father's occupation in the song "I Don't Want to Be". His father is of Irish descent and his mother's family was of Russian ancestry. DeGraw began singing and playing piano at the age of eight. He also has two siblings, both older, named Neeka and Joey (born August 1973). It was at his brother's advice that he began writing his own songs.Joey DeGraw is a musician as well, currently touring to promote his own music.

DeGraw rose to fame in 2003 when "I Don't Want to Be" was chosen as the theme song for teen drama One Tree Hill. The song has also been performed on American Idol and Idol Sweden by various contestants during different seasons.

Randall Stuart "Randy" Newman (born November 28, 1943) is an American singer-songwriter,arranger, composer, and pianist who is known for his mordant (and often satirical) pop songs and for film scores.

Newman often writes lyrics from the perspective of a character far removed from his own experiences, sometimes using the point of view of an unreliable narrator. For example, the 1972 song "Sail Away" is written as a slave trader's sales pitch to attract slaves, while the narrator of "Political Science" is a U.S. nationalist who complains of worldwide ingratitude toward America and proposes a brutally ironic final solution. One of his biggest hits, "Short People" was written from the perspective of "a lunatic" who hates short people. Since the 1980s, Newman has worked mostly as a film composer. His film scores include Ragtime, Awakenings, The Natural, Leatherheads, James and the Giant Peach, Meet the Parents, Cold Turkey, Seabiscuit and The Princess and the Frog. He has scored six Disney-Pixar films: Toy Story, A Bug's Life, Toy Story 2, Monsters, Inc., Cars and most recently Toy Story 3.