Want tickets to see Mum play the Orpheum on Oct. 24? Well, then riddle us this: Which of the following Icelandic musicians left Mum in 2002 to pursue other interests?

Is it

A. Bjork
B. Gyda Valtysdottir
C. Sigur Ros
D. Eirikur Orri Olafsson

Be one of the first to e-mail us at fishbowlla@mediabistro.com with the right answer, and the tickets are yours! (Please put the word "Mum" in the subject line.) We'd say "Good luck" in Icelandic, but we don't know how.