Which Artist Performed Love Is Open Door Lyrics Frozen Live First?

I still get a silly grin when that duet starts — the version you hear in the movie 'Frozen' was originally sung by Kristen Bell (Anna) and Santino Fontana (Hans). They recorded the song together for the film, and those are the performances credited in the soundtrack. The lyrics themselves were written by Kristen Anderson-Lopez and Robert Lopez, who made the whole scene feel like a playful, whirlwind meet-cute.
If you're thinking about a live debut, the safest way to put it is this: the first recorded performance is the one by Bell and Fontana for the movie, and that recording is what introduced audiences everywhere to the song. After the release, the song popped up in all kinds of live settings — cast interviews, radio spots, and a flood of covers online. Fans and performers on YouTube probably brought it to live stages in small venues before any big televised or official promotional performance.
As someone who used to sing Disney tracks at family karaoke nights, I can tell you that 'Love Is an Open Door' lives mostly in duets at parties and on social feeds. If you want to trace the very first public live rendition beyond the studio track, you'd be looking at a mix of promotional events and fan covers soon after the film's release in 2013, but the original, definitive vocal performance is definitely Bell and Fontana in 'Frozen'.

The first vocal performance people hear in relation to 'Love Is an Open Door' comes from the film itself: Kristen Bell and Santino Fontana sing it as Anna and Hans. I like to think of the movie track as the song’s official debut — it was written by Kristen Anderson-Lopez and Robert Lopez, who crafted a cleverly paced duet that plays off romantic tropes before flipping them.
From a practical perspective, studio recordings for animated films are typically the first instance a song is performed publicly — that recording is put on the soundtrack and released, reaching listeners worldwide. After that, live performances follow: cast appearances, interviews, and countless fan covers. I’ve seen amateur duets at coffeehouses and local theatres where people perform it live, and there are plenty of semi-professional renditions on YouTube and in musical theatre circles.
So, if your question is about which artists first performed the lyrics in a way the public heard: it's Kristen Bell and Santino Fontana on the 'Frozen' soundtrack. If you’re curious about specific live-performance chronology (like the first time either of them sang it on stage together), that gets trickier to pin down without event records, but the studio recording remains the original public performance everyone recognizes.

Kristen Bell and Santino Fontana are the original performers of 'Love Is an Open Door' in 'Frozen' — they recorded the duet for the film and that soundtrack version is what introduced the song to audiences. The lyricists are Kristen Anderson-Lopez and Robert Lopez, who wrote the playful, quick-fire back-and-forth lines.
When people ask who performed it live first, most of the time the film recording is treated as the debut; after the soundtrack dropped, live renditions surfaced everywhere from press events and cast Q&As to fan covers and stage shows. I’ve heard it performed at a friend’s house party and at a small community theatre showcase, and honestly those grassroots performances were practically instantaneous after the movie blew up. So while the studio recording is Bell and Fontana, the very first live singing beyond the film likely came from promotional appearances or early fan covers shortly after the film’s 2013 release.