Justin Guarini Videos

Justin Guarini, Aisha Jackson, Briga Heelan, and the cast of Once Upon a One More Time appeared on GMA3 this afternoon to perform 'Crazy.' The musical, powered by the music of Grammy Award-winning international pop icon Britney Spears, is currently running on Broadway at the Marquis Theatre. Watch videos of both of the performances now!

Justin Guarini and the cast of Once Upon a One More Time took over Times Square this morning for a performance of 'Circus' on Good Morning America. This marked the production's first televised performance. Stay tuned for the show's second performance on GMA3: What You Need to Know. Watch the video performance now!

Once Upon a One More Time playwright John Hartmere opened up about Britney Spears' initial reaction to the musical during a feature on ABC News. The segment also included interview with stars Justin Guarini, Briga Heelan, and Adam Godley, alongside director and choreographers Keone and Mari Madrid. Watch the video now!

Just last night, the best of Broadway gathered at the Marquis Theatre to celebrate opening night of the new Broadway musical Once Upon A One More Time. In this video, we're taking you inside opening night with the cast!

Get a first look at photos and video of Once Upon a One More Time on Broadway!

Watch rehearsal footage of 'Crazy' from Once Upon a One More Time, beginning previews tonight!

Watch a special sneak peek video clip of the cast of Once Upon a One More Time in rehearsals!

Tony winner James Monroe Iglehart is lending his voice to Mr. Puppypaws in Disney's animated series SuperKitties! Watch an exclusive clip of Iglehart as the series' villain now. Also voicing the recurring villains in the series are Justin Guarini ('American Idol'), Ruth Pferdehirt ('Finding Nemo: The Musical'), and Isabella Crovetti ('Vampirina').

Watch as Seth Rudetsky and Shoshana Bean rehearse 'Waving Through a Window' from Dear Evan Hansen in rehearsal for tonight's live streaming concert! Tune in at 8pm ET to watch the one-time only live event.

Watch as Seth Rudetsky and Shoshana Bean rehearse a Ragtime classic for tonight's live streaming concert! Tune in at 8pm ET on October 31 to watch the one-time only live event!

Watch as Seth Rudetsky and Mean Girls's Erika Henningsen rehearse 'I'd Rather Be Me' & more for tonight's live streaming concert! Tune in at 8 PM ET to watch the one-time only live event, with special guest Kate Rockwell!

Watch as Seth Rudetsky and Mean Girls's Erika Henningsen rehearse 'Meadowlark' in rehearsal for tonight's live streaming concert! Tune in at 8 PM ET to watch the one-time only live event, with special guest Kate Rockwell!

SiriusXM Broadway host Seth Rudetsky's critically acclaimed concert series back online this Fall and better than ever. Coming up tonight at 8 PM ET is Jessie Mueller!

SiriusXM Broadway host Seth Rudetsky's critically acclaimed concert series back online this Fall and better than ever. Coming up this Sunday is Justin Guarini! 

Watch as Richard Ridge chats with Broadway favorite Justin Guarini, who will soon join Seth Rudetsky for Seth's Concert Series, airing Sunday, October 10 at 8pm ET. 

Today, Broadway veteran Telly Leung shared a clip of the cast of Broadway's first acapella musical, In Transit, singing the song, 'We Are Home' from the show.