In the mid-1970s  (74, 76.) Can anyone guess the Name of what American extremely popular based (Prog) Rock band was. Hint:                    During there First or second released sold quarter of a million copies, and then with another album released about 2 years later, went on to receive substantial and excessive airplane on American Radio-(even still today.) And went on to achieve International  Success and worldwide success.  Also with their later recordings selling in excess over 3 million copies achieved multi-platinum success, Which puts them on the map in "Classic rock and music history forever"   ... View more