Philadelphia-based rapper and producer Sammus brings her out-of-this-world music to the Ace Hotel, following an artist talk at Carnegie Mellon University. Hitting the stage before the Billboard-charting musician are Pittsburgh local artists: advocate rapper Romance Nyogu, lo-fi singer/songwriter Swampwalk, and electronica band Kowloon Corp, or K-Corp. The event is free, but door donations are suggested, which will go to Gwen’s Girls, an Allegheny County based organization that aims to empower young women to have productive lives.