Fuck ya on the freestyle advice. Another good way is to record yourself freestyling. I will put like 5-10 tracks on and free for like 30-45 min.+ You can play it back and really begin to tweak your delivery this way. No matter what like 99% of the time, you will progress from shit to being able to ride a beat wonderfully. There is also nothing that will advance your skill faster. Trust me.

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Potential Music Inc.