This is her original song, her debut song near her 18th birthday in fact. I recommend you check out other original song from her, and her cover are phenominal too. My personal favorite are READYMADE (original), Love-ka (cover) and Eat (in colabboration with another producer Jon-Yakitory)
Yes Ussewa is an original song. Her first original song. Here little more info about her. Ado is only 19 years old. She skyrocketed to fame in asia after her first Original song called Usseewa in 2021. (which is slang for shut up) She was only 17 years old back then.
