Jarosz, Sarah

With her new album, “Polaroid Lovers,” a luminary of Americana broadens her sound.In modern Nashville, songwriting is often a matter of professionalized co-writing: planned, mix-and-match collaborations by appointment, musicians sharing a room to come up with sturdy material.It’s a method that Sarah Jarosz had largely shied away from until she made her seventh studio album, “Polaroid Lovers.” The LP, arriving Friday, includes songs she wrote with behind-the-scenes Nashville stalwarts including Jon Randall, Natalie Hemby and the album’s producer, Daniel Tashian, who worked on the country-psychedelia fusion of Kacey Musgraves’s “Golden Hour.”On “Polaroid Lovers,” Jarosz reaches toward a broader audience while still maintaining her individuality. The songs are more plugged in, muscular and reverberant than her past albums, which were intimate and largely acoustic. But her particular perspective — at once clearheaded, thoughtful, vulnerable and open to desire — comes through.The first song Jarosz wrote with Tashian was “Take the High Road,” with a chiming chorus that declares, “It won’t be the easy way/Saying what you want to say.” In a video interview from her home in Nashville, with string instruments hanging on the wall behind her, Jarosz said that the song’s lyrics “are almost a thesis for the whole album. You know, ‘I’m tired of being quiet — time to face up to the fear.’”Jarosz, 32, is a luminary in acoustic Americana, where bluegrass, folk, jazz and chamber music mingle with pop and rock. Born in Austin, Texas, and raised in Wimberley, a small town nearby, Jarosz emerged as a teenage bluegrass prodigy, playing mandolin, guitar, banjo and the instrument she considers her “soul mate”: the octave mandolin, pitched an octave below the standard mandolin, which she often uses for solos or countermelodies. The instrument sounds a little darker and twangier than acoustic guitar in the same range — a hand-played lower voice that answers Jarosz’s own hovering mezzo-soprano.She made her first four albums in Nashville, and she was urged to write songs with more seasoned musicians; she chose not to release any of them. “The quote-unquote ‘Nashville co-writing’ thing had been pushed on me when I was like 18, 17, making my first record,” she said. “I was really closed off to it back in that time, because I felt like I was still finding my voice. And I was worried that if I went into those co-writing rooms prematurely, that I would get lost at sea.”We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber?  More