CREATE TABLE songs (songid DECIMAL, title TEXT)
CREATE TABLE vocals (songid DECIMAL, bandmate DECIMAL, type TEXT)
CREATE TABLE performance (songid DECIMAL, bandmate DECIMAL, stageposition TEXT)
CREATE TABLE albums (aid DECIMAL, title TEXT, year DECIMAL, label TEXT, type TEXT)
CREATE TABLE band (id DECIMAL, firstname TEXT, lastname TEXT)
CREATE TABLE instruments (songid DECIMAL, bandmateid DECIMAL, instrument TEXT)
CREATE TABLE tracklists (albumid DECIMAL, position DECIMAL, songid DECIMAL)

Find all the instruments ever used by the musician with last name 'Heilo'?
SELECT instrument FROM instruments AS T1 JOIN band AS T2 ON T1.bandmateid = T2.id WHERE T2.lastname = "Heilo"
SELECT "instrument" FROM "instruments" AS "T1" JOIN "band" AS "T2" ON "Heilo" = "T2"."lastname" AND "T1"."bandmateid" = "T2"."id"