They say my music knocks, so I hope it open every door

from Tyga (Ft. Nas & Wale) – Kings and Queens Lyrics on Rap Genius

Play on words here:

Music that “knocks” is music that, ya know, bumps, has some nasty bass, whatever; Tyga wants his knocking music to “open doors” for him, to give him opportunities.

Get it? Because you knock, then someone opens the door?

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