Younger brother of urban-pop producer extraordinaire Timbaland, Sebastian (born Garland Mosley) is a part of a little pool of ghostwriters that Timbaland has relied on for his solo recordings because the early 2000s. In his adolescent years, Sebastian originally believed that his potential will be in sports activities, but he was drawn increasingly more into rap music and composing rhymes due to his brother, who was simply just getting started like a DJ at that time. After completing senior high school, he joined up with Timbaland and breakout R&B vocalist Ginuwine on tour, which is normally where he solidly decided that he’d pursue music as an occupation. The initial lyrics he composed for Timbaland had been for the melody “We at It Once again” for the soundtrack Romeo Must Die (2000), which the rhyme-scripter also produced a visitor appearance. Through the entire next couple of years, he continuing to make visitor appearances on several Timbaland-produced songs, especially for the Timbaland & Magoo combo. When Timbaland founded Mosley GROUP in 2006 following the demise of his Defeat Membership imprint, Sebastian agreed upon to the label and discovered himself in the dense of Timbaland’s brand-new wave of well-known strikes. He co-wrote labelmate Nelly Furtado’s chart-topping “Promiscuous” and added to Timbaland’s 2007 outing Presents Surprise Value.