Jay Rock and Kendrick Lamar invite viewers into the studio to check out the making of 'Pay For It.' Beats By Dre captured the two MC's talking about their own inspirations on the song. Kendrick refers to Serena Williams who is featured in the latest beats commercial and turning the negativity in his life into positives as inspiration. Jay Rock discusses his his perseverance and drive to record when making this record. Kendrick Lamar's album To Pimp A Butterfly hits stores on March 23rd and is available for pre-order on iTunes. Watch the Beat x Beat story behind 'Pay For It' above.