Final answer:
There appears to be a misunderstanding in the question as no information provided speaks of 'Mapfuno' playing the mbira guitar. The provided texts discuss Gonçalo Mabunda's artwork involving decommissioned weapons and anti-war themes, and other mentions range from music therapy to the history of southern Africa's Iron Age.
Step-by-step explanation:
The query regarding when Mapfuno began playing the mbira guitar seems to be based on a confusion of names or subjects. The provided information does not mention a figure named Mapfuno related to the mbira guitar. Instead, the content provided gives us insight into the work of Gonçalo Mabunda, a Mozambican artist known for incorporating weaponry into his art pieces as a form of anti-war activism. It is essential to clarify that Mabunda does not play the mbira guitar, nor does his work involve musical instruments. Instead, his artistic focus is on creating masks and anthropomorphic figures from decommissioned weapons of war, reflecting on the impact of the civil war in Mozambique. There is also a mention of Robert Gupta, who lies between being a doctor and a violinist, and uses music as therapy. Moreover, Tod Machover's contributions to musical expression and the invention of new instruments are highlighted. Lastly, information is provided about the Later Iron Age and the Kingdom of Mapungubwe in southern Africa, unrelated to the question of mbira guitar playing but relevant for understanding the region's cultural backdrop.