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Although she’s often recognized as the sonic gal pal to Macklemore and Ryan Lewis, after writing and singing the gorgeous hook on their monster hit single “Same Love,” Mary Lambert is no sidekick: She’s a bonafide leading lady with legitimate poetic chops. After going toe-to-stilettoed-toe with Madonna when they teamed up to sing “Same Love” at the 2014 Grammys’ epic same-sex marriage ceremony, Lambert’s debut solo single, “She Keeps Me Warm,” hit No. 2 on the iTunes singer/songwriter charts. Not one to be confined to a single genre, Lambert broadened her range with “Secrets,” a track from her Heart on My Sleeve album that hit No. 1 on Billboard’s dance chart. Lambert also aims to share her reality with listeners by posting poems on her website, starting a #MarySecrets postcard campaign (similar to PostSecrets) to help fans share their insecurities, and promoting body positivity online. Mary Lambert performs with Youth Slam Team at 7 p.m. at U Street Music Hall, 1115 U St. NW. $20. (202) 588-1889. ustreetmusichall.com.