Kesi initially promoted himself through his own YouTube channel within the grime genre,[4] also cooperating with others, notably Kidd and Gilli.

[6] Success on the Internet with particularly debut song "Byen Sover" led to a series of concerts and interest from established record labels, meaning that Kesi, at the age of 18, signed with Universal Records in July 2011.

[8] This brought in huge media visibility,[9] and an appearance on Danish broadcaster, TV 2 in a special feature[10] Kesi also performed in a series of concerts, including at Roskilde Festival, Copenhagen Distortion and festival Sounds.

His debut album Bomber Over Centrum was released in February 2012,[12] followed by Ung hertug (2013) and Barn af Byen (2015).

[13][14] During the following years, Kesi mostly focused on releasing singles, with "Følelsen", "Ligesom mig", "Kom over", "Su casa" (featuring Gilli), and "X" all topping the Danish charts between 2017 and 2019.