Complex sentence: After cleaning up, Urban released his self-titled American debut in 1999, which produced three top 5 hits and secured for him the Top New Male Vocalist Award at the 2001 Academy of Country Music Awards and the 2001 Country Music Association's Horizon Award.
Split into simpler sentences: After cleaning up, Urban released his self-titled American debut in 1999. He won Top New Male Vocalist Award at the 2001 Academy of Country Music Awards and the 2001 Country Music Association's Horizon Award.