But no, lengthy music copy-pastes have always been encouraged at Mudcat. Always. It's so frustrating to come across an interesting link and find that it's dead.
But yes, if you do post copy-pasted information, be sure to give us the URL (address) where you found it.
I have a niece who did an internship at Lesotho, and she brought back great stories. She plays the tuba, though - I've never heard her mention accordions.
Here's an interesting excerpt from accordions.com:

We are used to hearing traditional African music based on percussion, but the accordion was very popular between 1880 and 1940. The white missionaries probably introduced the accordion into Africa, and much of the continent's music played with accordions is a mixture of Christian hymns and Latin songs.

The popularity of the accordion was probably due to it's sturdy construction and portability. But during the second world war, the guitar became fashionable (and many other Western instruments) and the "old style" symbolised by the accordion lost favour.

Though many Africans played the accordion, few names are recorded. Most musicians were only known to those living in the immediate vicinity, or perhaps the next village. However, in each African country where the accordion has been popular, we can find at least one celebrity. Here we have brief details for countries within Africa.

Lesotho: Over the years, Lesotho developed a strong accordion tradition, and today it is played in modern Sotho pop music bands. It is accompanied by tambourines, guitars and bass guitars. The musicians are semi-professional, performing on weekends. There are accordionists in the group "Tau La Linare. The people of Southern Sotho adopted the accordion into their traditional music, and have the accordion as the principal instrument. The accordion is sometimes accompanied by the bass guitar and percussion.

The entire article is interesting, but this is the part about Lesotho (pronounced luh-SOO-thoo)

Here's an example: https://www.youtube.com/watch?v=safXbLv1qfc

And another (longer, but no video): https://www.youtube.com/watch?v=A6hX0gNJmCI