Jacob Underwood is an American singer and songwriter, best known as a member of the boy band O-Town. The group gained fame in the early 2000s after appearing on the reality television show Making the Band, which was created by P. Diddy. Underwood's contributions to the band include lead vocals and songwriting. In addition to his work with O-Town, Jacob Underwood has pursued a solo music career and has been involved in various entertainment projects. He is recognized for his engaging performances and has maintained a loyal fan base over the years.