Robert Plant’s passion for eclectic styles and mystical themes comes into sharp focus on his eighth solo album. Featuring a powerful backing band dubbed The Strange Sensation, “Freedom Fries” is a rock ’n’ roll barn-burner anchored by a Moroccan-style beat, offering pure movement and restless syncopation as Plant’s lyrics allude to Western imperialism on ancient lands. “The Enchanter” slides along like supercharged desert blues, Plant’s voice a sultry murmur over massive drums and curlicue guitar licks, while “Red, White and Blue” channels old-time American folk.