It's one thing to hear others echo John Lennon, but quite another to hear his son Sean do it. Recorded in the couple's home studio, this set of duets by Lennon and his model girlfriend, Charlotte Kemp Muhl, recalls other forebears too, such as the damaged beauty of Elliott Smith. But the songs have a sunny, psychedelic side. "We'll make kites from our bones," the couple sing on "The World Was Made for Men," culling playfulness from deep darkness.

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“Help Me”

Joni Mitchell wrote and recorded this song for her album Court and Spark, but she had to switch from her regular band to make the song sound exactly the way she wanted. "I had attempted to play my music with rock & roll players," she told Rolling Stone. "They’d laugh, 'Awww, isn't that cute? She's trying to teach us how to play.'" Mitchell switched to a jazz band, Tom Scott’s L.A. Express, and scored the biggest hit of her career in the process.