An intimate look into a beautiful friendship and musical partnership that transcends generations.
| Actor | Role |
|---|---|
 Lady GagaSelf | Self |
 Tony BennettSelf | Self |
| SSusan CrowSelf | Self |
 Martin ScorseseSelf | Self |
 Stevie WonderSelf | Self |
 Anderson CooperSelf | Self |
| JJoe GermanottaSelf | Self |