Heidelberg German pronunciation: [ˈhaɪdəlbɛʁk] ( listen) is a city in south-west Germany. The fifth-largest city in the State of Baden-Württemberg after Stuttgart, Mannheim, Karlsruhe and Freiburg im Breisgau, Heidelberg is part of the densely populated Rhine-Neckar Metropolitan Region. In 2009, over 145,000 people lived in the city. Heidelberg lies on the River Neckar in a steep valley in the Odenwald.

A former residence of the Electorate of the Palatinate, Heidelberg is the location of the University of Heidelberg, well-known far beyond Germany borders. Heidelberg is a popular tourist destination due to its romantic and picturesque cityscape, including Heidelberg Castle and the baroque style Old Town.

Heidelberg is in the Rhine Rift Valley, on the left bank of the lower part of the River Neckar, bordered by the Königsstuhl (568 m) and the Gaisberg (375 m) mountains. The River Neckar here flows in an east-west direction. On the right bank of the river, the Heiligenberg mountain (445 m) rises. The River Neckar leads to the River Rhine approximately 22 kilometres north-west in Mannheim. Villages incorporated during the 20th century reach from the Neckar Valley along the Bergstraße, a road situated along the Odenwald hills.

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.

André Léon Marie Nicolas Rieu (born 1 October 1949) is a Dutch violinist, conductor, and composer best known for creating the waltz-playing Johann Strauss Orchestra.

The name Rieu is of French Huguenot origin. He began studying violin at the age of five. His father, of the same name, was conductor of the Maastricht Symphony Orchestra. From a very young age he developed a fascination with orchestra. He studied violin at the Conservatoire Royal in Liège and at the Conservatorium Maastricht, (1968–1973). His teachers included Jo Juda and Herman Krebbers. From 1974 to 1977, he attended the Music Academy in Brussels, studying with André Gertler, getting his degree "Premier Prix" from the Brussels Royal Conservatory.

At University he performed the Gold And Silver Waltz by Franz Lehár. Encouraged by the audience reaction he decided to pursue the waltz form. Rieu formed the Maastricht Salon Orchestra and performed as a violinist with the Limburg Symphony Orchestra. In 1987, he created the Johann Strauss Orchestra and his own production company. Since then, his melodramatic stage performances and rock-star demeanor have for some been associated with a revival of the waltz music category. André Rieu plays a 1667 Stradivarius violin.