The Nyamwezi, or Wanyamwezi, are the second-largest of over 120 ethnic groups in Tanzania. They live in the northwest central area of the country, between Lake Victoria and Lake Rukwa. The term Nyamwezi is of Swahili origin, and translates as "people of the moon".

Historically, there have been five tribal groups, all referring to themselves as Wanyamwezi to outsiders: Kimbu, Konongo, Nyamwezi, Sukuma, and Sumbwa, who were never united. All groups normally merged have broadly similar cultures, although it is an oversimplification to view them as a single group. The Nyamwezi have close cultural ties with the Sukuma people. Their homeland is called Unyamwezi, and they speak the language Kinyamwezi, although many also speak Swahili or English.

It was only in the 19th century that the name could be found in literature; the term might include almost anyone from the western plateau. Travel taught them that others called them Nyamwezi, and almost all men accepted the name given to them by the coastal people indicating that the Nyamwezi came from the west. A century later, their land is still called "Greater Unyamwezi", about 35,000 square miles (91,000 km²) of rolling land at an elevation of about 4,000 feet (1,200 m).

Marina Lambrini Diamandis (Greek: Μαρίνα-Λαμπρινή Διαμάντη, pronounced [ðʝaˈmadi]; born 10 October 1985), better known by her stage name Marina and the Diamonds (sometimes stylised as Marina & the Diamonds), is a Welsh singer-songwriter. She rose to fame after reaching number two on the BBC Sound of 2010 poll list, coming second to Ellie Goulding. After releasing one private EP, Diamandis released her second extended play, The Crown Jewels EP, with help from Neon Gold Records, in 2009. Now signed to 679 Recordings, she released her debut full length studio album, The Family Jewels, followed by her third extended play, The American Jewels EP, in 2010. In 2011, Diamandis announced that she was working on her second album, Electra Heart, which was released in April 2012 and went to #1 in the UK and Ireland.

Her stage name, "Marina and the Diamonds", consists of Diamandis' first name and the translation of her surname which means "Diamonds" in Greek. Although "The Diamonds" is often mistakenly believed to refer to her backing band, it in fact refers to Diamandis' fans: she explains this on her Myspace page by saying "I'm Marina. You are the diamonds."