Kanye West - All Day ft. Kendrick Lamar

Timelines Involved

Analysis

This track is an earlier version of All Day by Kanye West that has Kendrick Lamar in it. Most likely Kendrick Lamar was used as a ref vocals and was not supposed to end up in the finished song to start with. The date for leak is approximate based on a billboard article.
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Event Date:
 
https://www.youtube.com/watch?v=y3qEnsE0IMM