EXO-CBX has - no surprise - swept music charts with "Hey Mama!".
EXO's first subunit consisting of Chen, Baekhyun, and Xiumin released their mini album with title song "Hey Mama!" on the 31st at midnight KST. The song ranked #1 on 6 charts including Melon, Genie, Bugs, Olleh, Mnet, and Soribada.
Not only so, but the boys garnered 1 million views in about 6 hours, and currently (at time of writing) has 1.8 million views at not even 12 hours after the release.