Cause I had too much pride to take this motherfucking cadence
A cadence in military marching is the rhythm according to which one marches in line. Pusha’s saying he goes at his own speed all the time, lyrically and in career advancement. He marches (and) raps to his own beat.
Pusha is also referring to the fact he didn’t steal Jay-Z’s flow over this classic Jay song.
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