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.lastname = "Heilo" AND T2.title = "Der Kapitan"
Jenis vokal mana yang dimainkan oleh musisi dengan nama belakang "Heilo" dalam lagu dengan judul "Der Kapitan"?
CREATE TABLE band (id VARCHAR, lastname VARCHAR); CREATE TABLE vocals (songid VARCHAR, bandmate VARCHAR); CREATE TABLE songs (songid VARCHAR, title VARCHAR)