It’s hard to imagine today that a song as intimate, honest, and powerful as “At Seventeen" would go on to sell millions. But Janis Ian struck a chord 40 years ago, when her 1975 landmark album Between the Lines sold nearly 2 million records and won her a Grammy. Although only 24 years old at the time, Janis had been around the music business for nearly a decade by the time this album rolled around. She wrote all the songs and accompanies herself on guitar, backed by some stellar studio musicians. The style is acoustic and jazzy, with songs ranging from the melancholy (“Watercolors”) to the seductive (“Bright Lights and Promises”). It’s a stellar achievement and a beautiful snapshot of a period in the mid ‘70s when singer/songwriters wore their hearts on their sleeves and brought millions of listeners along for the company.