Okot Mark (born 23rd June 1993), also known by his producer name Rey Macc, is a Ugandan singer and songwriter. Okot Mark completed high school in 2012 and graduated with a degree in Industrial and Fine Art. His musical journey began in primary school, where he started writing songs. In 2011, he delved into music production using FL Studio, a software introduced to him by a high school friend. With his first laptop, received at the beginning of his first semester at Makerere University, Okot explored the digital audio workstation (DAW) extensively, aided by YouTube tutorials and a passion for remaking popular tracks like "Marvins Room" by Drake.