Hwasa of Mamamoo will have her first solo stand-alone show in Seoul on Jan. 17-18, her agency P Nation said Friday. The singer announced “Mi Casa” with a poster in which sheappears draped in a maroon tulle dress. She has been enjoying the success of her digital single “Good Goodbye,” which was released in October. She co-wrote the melody and lyrics of the song, which nabbed four trophies from television music chart shows. It also topped Billboard’s World Digital Song Sales Chart, a first for the