Los Angeles hard-rock act Stitched Up Heart has a unique approach to self-promotion: They make music and share it live. With a handful of festivals and a few hundred shows under their belts since their 2010 inception, the band members shirk online promotion and big-hype tours in lieu of a simple work ethic and nose-to-grindstone approach.

After releasing a demo in late 2010, they marched back into the studio to record their debut EP Escape The Nightmare in 2011. The release featured a unique blend of post-hardcore and radio-ready metal. Shortly thereafter, vocalist Mixi Demner was included in Revolver magazine’s “Hottest Chicks in Hard Rock 2011,” grabbing the band some exposure and newfound attention.

The release of 2014’s Skeleton Key introduced a leaner, meaner band, with more metallic riffing and driving double bass. The six-song release drew from more metallic-tinged influences like Thrice and Black Veil Brides, with Demner delving into guttural screaming, putting to rest tired Paramore and Flyleaf comparisons while retaining a pop sensibility.

Returning to the road with a new album in the works, Demner and crew continue their DIY self-booked approach to touring, jumping onto larger bills where they can. This time around the band shares stages along the way with Lamb of God, Slipknot and more. But it’s no big deal — just a day in the life of a working rock band.

Alt-rock Portland band Summer Soundtrack joins Stitched Up Heart 8 pm Monday, Aug. 24, at WOW Hall; $10 adv., $12 door. All ages.