The junior Frank Sinatra, rapping out the Opera
You should spectate in the booth with a suit and binoculars
Like nigga its a honor, it's motherfuckin' honor

from Joey BADA$$ – Blooming Blossoms (Flowers Pt.1) Lyrics on Rap Genius

Meaning

He proclaims his raps are nice like Frank Sinatra or Opera music. So nice that if you see him rapping in the booth/ in person you should treat that moment like you would a peice of exquisite art or an opera performance; stay silent and appreciate the moment

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