RaNia (라니아) was a girl group under DR Music. They debuted on April 6, 2011 with the digital single "Teddy Riley, The First Expansion In Asia". From 2016 to 2018, they promoted as BP RaNia. On June 26, 2020, member Hyemi announced through their SNS that she was the only member left in the group, so it would be strange to release an album under the name RaNia, arguing that due to this the group would start fresh under the name B.S. and that they would soon be releasing a new album, with new members.