yeah,dats true.holbrook,it's an interesting name,very unique really.i prefer it if Mika's name is actually mica and not michael,you know,our Mika,he's such a guy that hardly imitates anyone in his styles.the name 'mica' suits him better i guess.well,check this out,this is what i found on wikipedia:
Mica Penniman (born 18 August 1983), known as Mika (pronounced /ˈmiːkə/),Some sources[1][2][3] note his birth name as Michael Holbrook Penniman.He slightly altered his given name, Mica, changing the "c" to a "k," because he was frustrated by how often people would mispronounce it.
i hope this solves any further queries.otherwise,mika's legal name will remain a mystery forever.lol..