It is a
When it comes to my sound which is the champion sound
Believe (believe)

from Kanye West (Ft. 2 Chainz, Big Sean & Pusha T) – Mercy Lyrics on Rap Genius

Meaning

Sound System ‘clashes’ were a very popular thing thing in Jamaica, where two or more ‘sounds’ (comprising of sound system, a selector and a disk Jock) would ‘battle’ and decide who was best

This sample was previously used by Brother Ali on his track “Champion”

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