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The video is described as "music video teaser with friends", and indeed Amber and some of her friends in the industry have come together to have some fun and "shake that brass"! As mentioned before, "Shake that Brass" is an urban hip-hop song with a brass sound and conveys the message of forgetting about your worries and enjoying the moment. Amber also took part in writing and composing the song, for which Girls' Generation's Taeyeon participated as a featuring artist.

Amber's first mini album 'Beautiful' will be released online on the 13th ahead of its physical release on the 16th! Amber will also kick off her solo-debut stage on KBS 2TV's 'Music Bank' on the 13th! In the meantime, check out the teaser above and see how many familiar faces you can name!

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[Update] - A preview of the upcoming song as been revealed through SM's rhythm mobile game 'Superstar'. Take a listen to it below!