Some Haitian suggestions:
Azor - strong voodoo influences, he's very big in Japan for some reason
Strings - sort of cross bteween Haitian
kompa and Gypsy Kings (have to declare personal interest: family connection to group's founder)
Sweet Micky, Top Vice - 2 top
kompa bands
'racine' (category as opposed to band) - Haitian voodoo music, usually just drums and voices; very powerful at night, especially when it ain't coming from your radio!
Twinspan
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Have arse. Will shake it for pop millions.