At this point, we all know how not to pronounce Idina Menzel's name, so thank you, John Travolta.

When the singer dropped by "The Tonight Show" on Monday night, fresh from her Oscar performance, the host made sure to take his time saying her name very carefully to avoid any slip-ups.

Fallon opened the show with a Travolta joke. "Welcome to 'The Tonight Show,' I'm Jimmy Fallon. Or as John Travolta calls me, 'Jellen Fayahaaa.' " Jimmy said he actually felt bad for his old pal Travolta for [article id="1723416"]mangling Menzel's name[/article]
 while introducing her at Sunday night's [article id="1723381"]Oscars[/article]
. He then, of course, played the Vine shared 'round-the-world of the incident.

"I feel so bad because you can tell as he's saying it [he's thinking], 'Oh, this is not going to come out right at all. I'm just going to say sounds.'" And then he played he clip again. "When Idina Menzel heard that she was like, 'Let it go, let it go, let it go.' "

A few minutes later, Fallon and house band the Roots joined Menzel in a classroom to jam on the Oscar-winning song using toy instruments, including a xylophone, kazoo, tambourine and lemon-shaped shaker. With Fallon slapping together three wood blocks with the letters "LIG" on them and Menzel hitting a triangle, the group played an energetic, unplugged version of the ballad.

Midway through, Fallon amped things up by unleashing a beat on his toy keyboard and Broadway veteran Menzel belted out the lyrics as they all brought it home by singing the line "cold never bothered me any way" in unison.