Which vocal type does the musician with first name "Solveig" play?
select type from vocals as t1 join songs as t2 on t1.songid = t2.songid join band as t3 on t1.bandmate = t3.id where t3.firstname = "Solveig"
Which one did that musician play in a song called "A Bar in Amsterdam"?
select type from vocals as t1 join songs as t2 on t1.songid = t2.songid join band as t3 on t1.bandmate = t3.id where t3.firstname = "Solveig" and t2.title = "A bar in Amsterdam"