Sisqo, whose real name is Mark Andrews, is an American R&B singer and songwriter best known as the lead vocalist of the group Dru Hill. His breakthrough as a solo artist came with the release of his debut studio album, "Unleash the Dragon" in 1999, which spawned the hit single "Thong Song". Characterized by his distinctive tenor voice and energetic performance style, Sisqo played a significant role in shaping the sound of late-90s R&B. Despite his relatively short peak period, his influence can be seen in the work of many contemporary artists in the genre.