The original Kingston Trio are joined by Tom Smothers, Mary Travers, Lindsey Buckingham, and current Trio members when they perform together for the first time in 20 years.
| Actor | Role |
|---|---|
| BBob ShaneSelf | Self |
| NNick ReynoldsSelf | Self |
| JJohn StewartSelf | Self |
| DDave GuardSelf | Self |
 Tom SmothersSelf - Host | Self - Host |
 Lindsey BuckinghamSelf | Self |
| RRoger GambillSelf | Self |
| GGeorge GroveSelf | Self |
 Mary TraversSelf | Self |