Welcome to the World featured a guest guitarist from a band of which the primary songwriter is who?
Welcome to the World:  It also features Scott Gorham of Thin Lizzy and Dave Murray of Iron Maiden as guest guitarists. Dave Murray (musician): David Michael "Dave" Murray (born 23 December 1956) is an English guitarist and songwriter best known as one of the earliest members of the British heavy metal band Iron Maiden.
i don't know