In reply to:
His full given name is Michael, and his nickname is Mica, which he turned into Mika for a stagename.
It occurs to me that since he pronounces it "Mike-A" (or possibly "Meek-A") he might have changed it (or been encouraged to change it) to avoid confusion with British soul singer and lifestyle media 'personality' Mica Paris whose name is pronounced "Mee-sha" '
"You complete me twister!" - Remade/Remodeled