Conversation so far:
How did Agnetha Fältskog's career begin in 1966?
Faltskog worked as a telephonist for a car firm while performing with a local dance band, headed by Bernt Enghardt.
Did she start with the band in 1966?
CANNOTANSWER.

Question: What is a major event that occurred sometime between 1966-1971?
Self-contained rewrite: What is a major event that occurred sometime between 1966-1971 for Agnetha Fältskog?