Sliven (Bulgarian: Сливен) is the eighth-largest city in Bulgaria and the administrative and industrial centre of Sliven Province and municipality. It is a relatively large town with 89,848 inhabitants, as of February 2011.

Sliven is famous for its Bulgarian Haiduts who fought against the Ottoman Turks in the 19th century and is known as the "City of the 100 Voyvodi", a Voyvoda being a leader of Haiduts.

The famous rocky massif Sinite Kamani (Сините камъни, "The Blue Rocks") and the associated national park, the fresh air and the mineral springs offer diverse opportunities for leisure and tourism. Investors are exploring the opportunity to use the famous local wind (Bora) for the production of electricity.

Another point of interest and symbol of the city, as featured on the coat of arms, is the thousand-year-old Stariya Briast (Старият Бряст, "The Old Elm"), a large Smooth-leaved Elm in the center of the city. During the time of the Ottoman rule, Turkish officials would hang Bulgarian revolutionaries on the tree. In modern times, the city is doing its best to keep the tree alive with the addition of cement to the base.

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.