Mention 1978 and younger listeners may immediately reach for the Bee Gees, Queen, or the soundtrack to Grease. The actual radio landscape was much bigger, with soft rock, disco, soul, country-pop, and arena rock all fighting for space while Saturday Night Fever turned disco into a full-blown cultural phenomenon. Plenty of songs that dominated American radio that year have since slipped out of everyday pop culture, even though one chorus can still transport a whole generation straight back to the car radio.