All in a name

Amongst other things, I'm having a go at writing a musical of 'in sane' proportions... I'm one scene in, with a working title of BOHEMIAN RHAPSODY...what I want to know is this, do Queen have a licence on those two words, or am I free to go ahead, without the fear of having to change the name once the flyers have been printed and paid for? Someone out there will know the amswer for sure ,and if I were a betting man I'd put my moolah on 'Na' or 'Logos'knowing the answer. PS: If anyone steals the name I promise that I shall sue the pants off you!Ha! Johnny Grim A lad in sane productions