The Followills return with a second album of hype-surfing hits and subtle experimentation. Yes, the riff-heavy Southern groove and trademark horndog lyrics are present and correct—just see the irrepressibly playful hymn to thwarted lovemaking that is “Soft”. But from the way “Milk” slowly blooms into a strange, bluegrass-tinged ballad to the moment Caleb Followill turns his distinctive strangled drawl into a yodel on “Day Old Blues”, Aha Shake Heartbreak boldly lassos an enticing fresh batch of ideas.