premise: Some Enchanted Evening is the second live album by the American hard rock band Blue Öyster Cult, released in September 1978 (see 1978 in music). It is Blue Öyster Cult's best selling album, having sold two million copies, including over a million in the United States. The album's seven original tracks were recorded at various locations in the United States and England.
hypothesis: Some Enchanted Evening was released during the 7th decade of the 20th century.
reason: Some Enchanted Evening was released during the 20th century.