Complex sentence: In 2006, Sparks competed for the charity Habitat for Humanity on the Fox celebrity competition "Celebrity Duets", where he got to perform with such musical legends as Smokey Robinson, Gladys Knight, Wynonna Judd, Dennis DeYoung, Dee Snider and Sebastian Bach.
Split into simpler sentences: In 2006, Sparks competed for the charity Habitat for Humanity on the Fox celebrity competition "Celebrity Duets". He performed with such musical legends as Smokey Robinson, Gladys Knight, Wynonna Judd, Dennis DeYoung, Dee Snider and Sebastian Bach.