And I play my own drums and basslines, you know me, homie
A variation of the phrase “March to the beat of your own drum,” which means at the end of the day, his decisions aren’t made by other people’s opinions.
Hitboy uses “bassline” as referring to a riff on a keyboard playing synthetic bass, contrasting with “bassline” in the previous line referencing a boundary line in basketball. This is a common MC technique where the same word is used twice but with different meanings and the repetition is a great effect and makes lyrics more memorable. He literally means that his beats are all his work — programming drums and playing the basslines. Ironically, he says this on a track that was actually produced by Bink!
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