Conversation so far:
when did The Undertones form?
The Undertones formed in 1974.
how did The Undertones form?
The Undertones members were five friends from Creggan and the Bogside, who originally drew inspiration from such artists as the Beatles, Small Faces and Lindisfarne.

Question: who were the five friends?
Self-contained rewrite: who were the five friends from Creggan and the Bogside, who originally drew inspiration from such artists as the Beatles, Small Faces and Lindisfarne in The Undertones?