Which vocal type has the band mate with first name "Solveig" played the most?
return band mates ;return first names of #1 ;return #1 where #2 is Solveig ;return vocal types of #3 ;return play of #4 ;return number of  #5 for each #4 ;return #4 where #6 is the  highest
['select', 'project', 'comparative', 'project', 'project', 'group', 'comparative']