Tianjin (help·info) (Chinese: 天津; pinyin: Tiānjīn; Mandarin pronunciation: [tʰjɛ́ntɕín]; Tianjinese: /tʰiɛn˨˩tɕin˨˩/~[tʰjɛ̃̀ɦɪ̀ŋ]; Postal map spelling: Tientsin) is a metropolis in northern China and one of the five national central cities of the People's Republic of China. It is governed as a direct-controlled municipality, one of four such designations, and is, thus, under direct administration of the central government. Tianjin borders Hebei Province and Beijing Municipality, bounded to the east by the Bohai Gulf portion of the Yellow Sea.

As a dual-core city, Tianjin is divided into the old city and the Binhai New Area. Binhai New Area is a new growth pole in China, and it maintains an annual growth rate of nearly 30% of the GDP. As of the end of 2010, 285 Fortune Global 500 companies have established branch offices in Binhai. It is a base of China's advanced industry, financial reform, and innovation.

In terms of urban population, it is the sixth-largest city of the People's Republic of China, and its urban land area (Binhai New Area is not included) ranks fifth in the nation after Beijing, Shanghai, Wuhan and Guangzhou. Tianjin's urban area is located along the Hai River, which connects to the Yellow and Yangtze Rivers via the Grand Canal in Tianjin. Tianjin was once home to foreign concessions in the late Qing Dynasty and early Kuomintang (KMT) era. The municipality incorporates the coastal region of Tanggu, home to the Binhai New Area and the Tianjin Economic-Technological Development Area (TEDA).

Pharrell Williams (born April 5, 1973), commonly known simply as Pharrell, is an American rapper, singer, record producer, composer, and fashion designer. Williams and Chad Hugo make up the record production duo The Neptunes, producing hip hop and R&B music. He is also the lead vocalist and drummer of hip-hop band N.E.R.D, which he formed with Hugo and childhood friend Shay Haley. He released his first single "Frontin'" in 2003 and followed up with his first album In My Mind in 2006.

As part of The Neptunes, Williams has produced numerous hit singles for various musicians. The two have earned three Grammy Awards amongst ten nominations. He is also the co-founder of the clothing brands Billionaire Boys Club and Ice Cream Clothing. He is a member of the supergroup V.A. Playaz with Fam-Lay, Clipse, Skillz, Missy Elliott, and Timbaland & Magoo.

Pharrell Williams was born on April 5, 1973, in Virginia Beach, Virginia, the eldest of three sons of Carolyn, a teacher, and Pharaoh Williams, a handyman. He met Chad Hugo in a seventh-grade summer band camp where Williams played the keyboards and drums and Hugo played tenor saxophone. They were also both members of a marching band; Williams played the snare drum while Chad was student conductor. With Hugo, Williams attended Princess Anne High School where they played in the school band; there he got the name Skateboard P.

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).