Musician Kapa Kat has cast a shadow of doubt on the success of Martha Mukisa’s "Sisaga" concert.

“Ogamba tosaaga naye, olabise okusaagila ku Freedom City loosely translated as you say you are not joking, but you seem to be joking about Freedom City),” Kapa Cat wrote on Facebook.

Kapa Cat has been called out by fans for spreading bad energy in the music business, especially against her fellow female musicians.

Martha recently expressed confidence that she will attract big numbers.

The concert will be her first since her breakthrough two years ago