The article provides brief biographies of Gwen Stefani and Blake Shelton, two American singers with successful careers in the music industry. Stefani was born in California in 1969 and rose to fame as the lead singer of No Doubt, producing hits such as "Don't Speak." She is also a fashion designer and TV personality with an estimated net worth of $160 million. Shelton was born in Oklahoma in 1976 and achieved his breakthrough in 2001 with the song "Austin." He has released numerous albums and serves as a coach on NBC's The Voice, earning a salary of $13 million per season. His total net worth is estimated at $120 million.