James Ssewakiryanga Junior, professionally known as Ssewa Ssewa, is a Ugandan live performing musician, multi – instrumentalist, founder of Janzi Band and inventor of Janzi, a musical instrument.

The Janzi is a string instrument invented by Ssewa Ssewa. The instrument has been used on all Janzi Band and Ssewa Ssewa’s setups since its inception. The janzi is a based on the traditional harp-like Ugandan instrument called the adungu, but the janzi is different in several ways, unique and patented as a separate instrument.

The name originates from the name of the band. His first instrument was a xylophone, taught by his mother. He started studying business at university, but after being encouraged and taught by members of his father’s band, decided to pursue music.