As much as Lenny Kravitz likes to deliver a big, distorted hook, his retro-tinged rock ‘n' roll is full of nuance. “Calling All Angels” floats along at a soft sway led by piano and delicate orchestration. “Thinking of You” is all sensual bedroom soul with just the slightest touch of funky guitar work. And “Flowers for Zoë” is a swirling and gentle ode to his daughter, featuring sparse, poignant strings.