The phrase "What Do I Know?" primarily refers to two notable songs:
- A 2017 song by English singer-songwriter Ed Sheeran, featured as the tenth track on his third studio album รท (Divide). The song expresses a hopeful message that love can change the world, despite the singer's self-admitted uncertainty about political matters. Sheeran wrote it quickly to impress his record label head and has performed it live to close shows, emphasizing love and positivity as central themes
- A 1995 debut single by American country band Ricochet from their self-titled album. This country ballad reached #5 on the Billboard Hot Country Singles & Tracks chart and was praised for its harmony-laden style. It was also recorded by Linda Davis in 1996
If your query "what do i know" refers to something else, please clarify. Otherwise, these are the main cultural references associated with that phrase in music.