MILLVALE — Julien Baker writes intimate, heart-wrenching songs drawn from her relationship experiences and triumphs over personal struggles.

The indie-rock artist sings those widely acclaimed songs with gripping emotion that’s been known to render concert audiences to spellbound silence. 

Though more and more, concertgoers have begun singing those songs back to her, which took getting used to for the Memphis native. 

“It is a little jarring, I had to get over that early in my touring career, seeing them sing words I wrote about a traumatic event or a very dark emotion,” Baker said. “But if that’s transmuted into something that people are enjoying that makes me more than happy.”

When she headlines Mr. Smalls Theater in Millvale on Sept. 29, Western Pennsylvania fans might sing something else to Baker — the “Happy Birthday” song.