What is "pallaso"

Pallaso Mayanja known by the mononym Pallaso is a Ugandan musician, who was born in late 1980s, he sings Afro beat, Hiphop, Dancehall, Afro pop, RnB and sometimes Kidandali. He sings in Luganda, mixes with English and sometimes Kiswahili. His birth name is Pius Mayanja. He started singing in Chameleone's group (his brother) by then he was calling himself Lizard. He later went to United States where he spent almost 10 years and in 2014 he came back to Uganda and started a music career in his country under his music group