Michael Ball, the musical's original Marius, made a special appearance.
Playbill's Margaret Hall breaks down the many connections between the 26 stars of the hit video series.
The Phantom of the Opera star is joined by guests Andrew Lloyd Webber, Aled Jones, and the Gregorian choir.
The series features Broadway artists performing their favorite songs outside of the showtune genre.
Ms. Smith played Young Nala in the long-running production.
Francesca Zambello is directing the classic musical at the Shakespeare Theatre Company with choreography by Joshua Bergasse.
The 2000s has been a great time for musical theatre.
Previews will begin at London's King's Head Theatre in January.
Broadway shows are a hot gift this year, with 30 productions enjoying 90% or higher capacity.