Nau'Jour Lazier Grainger, known professionally as Toosii, is an American rapper and singer who has emerged as one of the most compelling voices in contemporary hip hop. Born on January 9, 2000, in Syracuse, New York, he rose from a modest beginning to achieve mainstream prominence with his emotionally charged music, most notably his 2023 breakout single "Favorite Song," which propelled him onto the Billboard Hot 100 and solidified his status as a rising star. Toosii's ability to blend raw vulnerability with melodic rap has earned him a dedicated fanbase and critical acclaim, marking him as a significant figure in the genre's evolving landscape.

Growing up in Syracuse, Toosii was exposed to music at an early age, drawing inspiration from artists like Lil Wayne and 50 Cent. He began writing lyrics as a teenager and started releasing music in 2017, initially gaining traction on streaming platforms such as SoundCloud and YouTube. His early mixtapes showcased a talent for storytelling and emotional depth, setting him apart from many of his peers in the hip hop scene. Toosii's upbringing in a city known for its harsh winters and challenging socioeconomic conditions deeply influenced his lyrical content, which often explores themes of pain, love, and perseverance.

Toosii's career gained significant momentum with the release of his debut studio album, "Poetic Pain," in 2020. The album debuted at number 17 on the Billboard 200 and featured collaborations with artists like DaBaby and Polo G, helping to broaden his reach. The project's introspective nature and melodic hooks resonated with listeners, establishing Toosii as a promising new voice in hip hop. He followed this with a series of successful singles and mixtapes, including "Thank You for Believing" and "Boys Don't Cry," which further cemented his reputation for crafting heartfelt, relatable music.

The turning point in Toosii's career came in early 2023 with the release of "Favorite Song." The track went viral on TikTok, amassing millions of streams and landing at number 5 on the Billboard Hot 100. Its success earned Toosii a double platinum certification from the Recording Industry Association of America (RIAA) and led to widespread recognition, including performances on major television shows and festival stages. The single served as the lead for his second studio album, "Naujour," released later that year, which peaked at number 19 on the Billboard 200. The album showcased Toosii's artistic growth, blending introspective rap with R&B influences, and featured collaborations with Khalid and Summer Walker.

Beyond his music, Toosii has also been involved in philanthropy and community outreach, often using his platform to speak out about mental health and the challenges faced by young people growing up in underserved communities. He has been open about his own struggles with depression and anxiety, making him a relatable figure for many fans. As of 2025, Toosii continues to tour and release new music, building on the momentum of his recent successes. With a growing discography and a unique ability to connect with audiences through his honest storytelling, he remains one of the most promising artists in hip hop, poised for a long and influential career.