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

Hom many musicians performed in the song 'Flash'?
SELECT COUNT(*) FROM performance AS T1 JOIN band AS T2 ON T1.bandmate = T2.id JOIN songs AS T3 ON T3.songid = T1.songid WHERE T3.title = "Flash"
SELECT COUNT(*) FROM "performance" AS "T1" JOIN "band" AS "T2" ON "T1"."bandmate" = "T2"."id" JOIN "songs" AS "T3" ON "Flash" = "T3"."title" AND "T1"."songid" = "T3"."songid"