"I" (stylized in lowercase) 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. Background "i" was produced by Los Angeles producer Rahki, who also produced the song "Institutionalized". Although the version of "i" that appears on the album is drastically different from the single release, both versions contain a sample of the song "That Lady" by The Isley Brothers. Lamar personally visited Isley Brothers' lead vocalist Ronald Isley to ask his permission to sample the song: "I actually had to go to St. Louis and get the blessings from Ronald Isley," he said. "That was a trip. We got in the studio and just vibed and talked about how things were back then...