In the first place, most of the musicians who decide to go to Europe etc do not travel with intentions of going to become big musicians, they want normal jobs.
These chaps like Bebe Kero above were simply ordinary people waiting for hand outs from Koffi and friends of the band, that's how most singers,rappers, dancers and instrumentalists survive apart from the concert money they get from their bosses when lucky.
Life in Europe is certainly not as most people in Africa are made to believe but the fact is that due to the economy and minimum wages set in most European countries, someone can live well with what someone in Africa would consider as a useless job eg cleaner or carer or even bin man. It is better for these guys to have normal jobs like security jobs, etc and over the weekend and mid week doing their music, that's what a majority of them do.