Written by Lenny Kravitz, "Let Love Rule" is the title track and debut single from his first studio album, released on Virgin Records on September 6, 1989. The composition blends rock and soul elements, built around dirty guitar work paired with a psychedelic string arrangement that creates a lush yet energetic soundscape. A funky rhythm section supports lyrics reminiscent of John Lennon's utopian imagery, depicting an idealized world free of war and prejudice. Kravitz, a multi-instrumentalist, performed the drums, guitars, bass, and other instruments on the recording himself, with the funky four-to-the-floor drum pattern anchoring the track. The song served as an artistic mission statement for the young musician, who had synthesized influences from his parents' record collections while growing up and attending Beverly Hills High School. The single charted at number five on the US Modern Rock chart and number twenty-three on the US Mainstream Rock Tracks chart, establishing Kravitz as a peace-and-love-focused rock artist for a new era. On AllSolos, Karl Denson's tenor saxophone solo on the original recording is featured. Denson, who would go on to lead the Greyboy Allstars and later join the Rolling Stones' touring band, contributes a soulful horn presence that adds texture to the track's layered production. The song has remained a staple of Kravitz's live performances throughout his career.
