In the season finale we see the results of the top three performers who sang the night before. As well as crowning the big winner (live) we will also see many legendary recording artists and returning celebrities and even some fantastic surprise duets.
| Name | Type | Role | |
|---|---|---|---|
| Christopher Irvine | Guest Star | ||
| Smokey Robinson | Guest Star | ||
| Jai Rodriguez | Guest Star | ||
| Gladys Knight | Guest Star | ||
| Lea Thompson | Guest Star | ||
| Boyz II Men | Guest Star | ||
| Carly Patterson | Guest Star | ||
| Cheech Marin | Guest Star |