Was Dindo Yogo inspired by the Soki brothers to make a song about rain/water ?
The Soki Brothers made songs about different subjects such as Masanga (about the bad-side of drinking alcohol and being drunk), Nganga (which is about a jealous guy, who goes to a witchdoctor to get his rival fired from work), Nzambe Mokonzi (which is about a father that's broken about losing his child), Zamba Zamba (praising the rainforest) and Shofele (advising car-drivers to be careful on the road).
There are also rumors about president Mobutu being fed to hear only love-songs on the radio and asking musicians to sing also about other subjects which made many artists around 1975-1974 suddenly sing about different things for a short time. But I don't know if it's true.