Over the past 25 years, the D.C. underground rock scene has garnered a reputation—for better and sometimes worse—as idealistic, socially conscious, and a bit self-serious. At times, this city’s history can feel like it might collapse under the weight of itself, as stories about the good ol’ days grow louder, yet fall on increasingly deaf ears. Organizations like Mount Pleasant-based Radio CPR, however, exist almost to prove that D.C.’s old DIY spirit is not only alive, but thriving. Started in 1999, the fiercely independent, volunteer-run radio station (broadcast online and over the air at 97.5 FM) provides an outlet for individual voices and opinions that are usually ignored by the mainstream media. Its current schedule includes shows dedicated to Latin rock, go-go, and noise music, as well as live broadcasts of monthly Advisory Neighborhood Commission meetings. Because the station is run on the tiniest of budgets, it is sustained by benefit concerts and movie screenings. Tonight’s show celebrates the station’s 14th year with performances by local favorites E.D. Sedgwick, America Hearts, and Lowercase Letters.

E.D. Sedgwick plays with America Hearts and Lowercase Letters at 7 p.m. at La Casa, 3166 Mount Pleasant St. NW. $5. radiocpr.com.