Bongo star Rajab Abdul Kahali, popularly known as Harmonize, has sparked speculation after hinting at the release of a new song with a male artist he hasn't collaborated with in recent years.

In a Tuesday evening post, the 30-year-old singer hinted that he will be releasing a song with his 'brother,' with whom he hasn't been in the studio for over four years.

Konde Boy further hinted that he previously had a bad relationship with the artist until they realized there is God and love.

"I haven't been in the studio with him for over four years. LOL, it's funny that we were waiting for this. Another hit in the game this Friday with my brother,” Harmonize said through his Instagram stories.

He added, “I laugh a lot thinking about the times we used to wish bad things for each other before we knew there is God and love.”

The boss of Konde Music Worldwide wanted his fans to guess the artist he has collaborated with in the studio.

Based on the artist's description provided by Konde Boy, many fans seem to believe it might be his former WCB boss, Diamond Platnumz, or his former colleague at the label, Rayvanny.

The last song that the Kondegang boss did with Diamond was 'Kainama,' released in March 2019. The two major artists from Tanzania also featured Nigerian star Burna Boy in that song. Previously, they had released several songs together, including 'Kwangwaru,' 'Bado,' and 'Zilizopendwa.'

Harmonize later left Wasafi in 2019 and went on to form his own music label, Konde Music Worldwide.