What are the types of vocals that the band member with the first name "Solveig" played the most?
SELECT TYPE FROM vocals AS T1 JOIN band AS T2 ON T1.bandmate  =  T2.id WHERE firstname  =  "Solveig" GROUP BY TYPE ORDER BY count(*) DESC LIMIT 1
SELECT TYPE FROM vocals AS T1 JOIN band AS T2 ON T1.bandmate  =  T2.id WHERE firstname  =  "Solveig" GROUP BY TYPE ORDER BY count(*) DESC LIMIT 1
[{'Nenhum': 'Nenhum resultado encontrado'}]