You know how sometimes you’re on stage performing a benefit concert you organized in order to give back to an org that you depended on and is under attack for stupid political reasons, when all of a sudden one of your personal heroes stops by to duet a few with you? Well, so does Bethany Cosentino. Best Coast’s Planned Parenthood benefit concert at Los Angeles’ El Rey Theatre was going great last night when an iconic guest star popped in.

Liz Phair showed up during the band’s set to offer her assistance on 3 songs:  a pair from her own catalog, “Never Said” and “F**k and Run,” as well as Best Coast’s “When I’m With You.” The perennially bad-girl Phair told the crowd, “Thanks for putting your money where your mouth is and your bodies where it counts,” before ceding the stage back to Best Coast and frontwoman Bethany Cosentino. “Can I just say that having been able to do that in my life is so cool. You’re the coolest,” she said to Phair.

The “Don’t Sit Down” concert, which benefited the women’s health nonprofit under constant attack the last few years by right wing radicals and 45 who favors “punishing” mothers who acquire abortions, also featured performances by Veruca Salt, Side Eyes, The Regrettes, Lovely Bad Things and MUNA. In addition to ticket sales, the event included a silent auction and special, limited-edition merch sales to supplement the dollars donated, with all proceeds benefiting Planned Parenthood.

Cosentino, who helped organize the event, told the Los Angeles Times she’d taken advantage of Planned Parenthood’s services when she was too scared to talk about women’s health issues with her mother and too young to purchase insurance on her own. She has been eager to raise money for the organization, as well as educate women on the benefits of its services, which reach 5 million women, men and youths per year. Phair, whose Exile in Guyville, rocked patriarchal boats with its 1990’s release perfectly complemented Best Coast’s Cosentino.

“I wouldn’t be the artist I am without musicians like Liz,” Cosentino told the Times, “especially those female musicians when I was a teenager that made me go, ‘Whoa, girls with guitars.’ I only paid attention to boy pop-punk when I was super young, then I got older and realized girls can do it, too.”