Welcome to the World featured a guest guitarist from a band of which the primary songwriter is who?
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. Dave Murray (musician):  Along with the group's bassist and primary songwriter Steve Harris, Murray has appeared on all of the band's releases.
i don't know