Promotional schedules are in full force for Amber, who just made her solo debut with the track “Shake That Brass”. The f(x) member has been making the rounds of radio shows to talk about her new mini album, including the popular program Cultwo Show, which airs on SBS Power FM. On the show Amber discussed her appearance on the recent female soldier special of Real Men, as well as how she got SNSD‘s Taeyeon to feature on her single. Amber was casually dressed in a royal blue sweatshirt from ADER. Her backwards snapback is a black Genesis Hat from KRSP ($33).