Gordon Lightfoot turned from Canadian folksinger to an FM soft-rock staple as the ‘70s progressed. The success of songs such as “If You Could Read My Mind,” “Sundown,” and “Carefree Highway” brought Lightfoot into the mainstream. His record company, wishing to capitalize on that success, looked to issue a “Greatest Hits” collection, and so Lightfoot agreed to re-record his earlier material for the album. What it provides is a pleasant way to experience the more “mature” Lightfoot. His voice has smoothed and calmed in places, any angst replaced by an adult confidence that’s made Lightfoot a master singer/songwriter and professional entertainer. One of the biggest hits of his career, “The Wreck of the Edmund Fitzgerald,” was still a year away, and can be found on the extremely rewarding Summertime Dream collection.