"I" is a song by American rapper Kendrick Lamar featuring Ronald Isley of The Isley Brothers. It was released on September 23, 2014 as the lead single from Lamar's third studio album To Pimp a Butterfly. The song uses music from "That Lady", written by and originally performed by R&B group The Isley Brothers, elements from which were re-recorded rather than being directly sampled from the original record. "I" won two awards at the 2015 Grammy Awards: Best Rap Performance and Best Rap Song.

To Pimp a Butterfly is the third studio album by American rapper Kendrick Lamar. It was released on March 15, 2015, by Top Dawg Entertainment, Aftermath Entertainment and Interscope Records. The album was recorded in studios throughout the United States, with production from Sounwave, Terrace Martin, Taz "Tisa" Arnold, Thundercat, Rahki, LoveDragon, Flying Lotus, Pharrell Williams, Boi-1da, Knxwledge, and several other high-profile hip hop producers, as well as executive production from Dr. Dre and Anthony "Top Dawg" Tiffith. Guest appearances include Thundercat, George Clinton, Bilal, Anna Wise, Snoop Dogg, James Fauntleroy, Ronald Isley, and Rapsody.