 Well, number 10 in our special countdown of the 40 top artists of the 70s is the trio who kept their identities secret until after their second big hit. Their first release came out in the summer of 1970, and it peaked at number 3. But the group remained a mystery. Their second single hit the charts later the same year and made it all the way to number 1. In the meantime, several groups had sprung up around the country, calling themselves Dawn and getting jobs playing in nightclubs under that identity.