received widespread critical acclaim, and its stars Glen Hansard
and Markéta Irglová,
who composed and performed all the film's original songs, went on to win an Academy Award for the song Falling Slowly
Steven Spielberg was quoted as saying "a little movie called Once gave me enough inspiration to last the rest of the year".
Five years later, Once was adapted for the stage and opened on Broadway to a slew of Tony, Drama Desk and Grammy Awards.
The story, which follows two musicians simply known as 'Guy' and 'Girl' across five short days, took on a new life on stage, and productions opened all over the world including in London's West End.
By 2020, as Once now embarks on its first UK Tour, it has become one of the most celebrated new musicals of the century.
The iconic roles of 'Guy' and 'Girl' portrayed on screen by Hansard and Irglová, are taken on in this new tour by actor-musicians Daniel Healy and Emma Lucia.
Daniel is no stranger to the musical having had the opportunity to perform in the West End production.
A few years later and now Daniel is taking on the role full time:
"I've had the chance to see a few different guys play this role and every one of them had their own take on it.
"That's what's beautiful about this role, I think. He's the Everyman and could be any man.
"I can bring so many aspects of my own life to the role and have loved the process of making this my own."
Emma first fell in love with the film, before discovering the musical:
"I was quite young at the time but remember falling head over heels in love with the characters and the music.
"I then saw the show in the West End a few years later and it blew my mind!
"I had no idea that musical instruments could be used on stage like that - like they were just an extension of the actor's feelings and emotions.
"I remember telling my Mum that I'd found my dream role, so I'll never forget the phone call telling me I had the part - those phone calls are the best."
Once has been celebrated all over the world, and Daniel and Emma are clearly thrilled to be leading this first UK tour.
"It's a dream come true", Daniel enthuses. "
"I'm just so blessed to be able to tell such a beautiful story with gorgeous music and to be surrounded by a stellar cast."
"I feel so incredibly lucky", Emma adds.
"To be given the chance to put my own stamp on this character is so exciting."
Since the film first hit screens thirteen years ago, the characters of 'Guy' and 'Girl' have left a lasting impression on audiences.
"As an actor it's so interesting to play a character who has this beautiful upside-down arc", Daniel says of 'Guy'.
"He starts completely emotionally broken, hollow and has given up on life.
"Then an angel - armed with a hoover - begins to inspire him to rediscover who he really is."
"She is a beautiful example of someone who has experienced a huge amount of pain in their past but refuses to let it taint their outlook on life", Emma says of 'Girl'.
"She quite literally laughs in the face of cynicism and she is constantly trying her best to uplift and inspire other people - despite her own inner struggle.
"What she chooses to show on the outside doesn't always reflect how she really feels on the inside and it's so refreshing to play a character who is three-dimensional like that."
From the film to the stage adaptation, music is at the heart
The original score is celebrated for its melodic and lyrical vibrance, and on stage it is performed live by the entire cast.
"Playing the piano has always been a kind of outlet for me", says Emma.
"A way to express things that I couldn't quite put into words, in the same way that theatre always has - so to combine the two is really special.
"Nothing is pre-recorded and the music is played by the people who are actively telling the story, so you can really feel the emotion."
When it comes to the music of Once, Daniel and Emma both talk about Falling Slowly
being a standout moment.
It won the Oscar for Best Original Song, and they perform it together each night.
"I think the song is so special because it's the first time 'Guy' and 'Girl' realise that they understand each other", says Emma.
"Music has always and will always connect people in a way words sometimes can't.
"It's definitely one of my favourite moments in the whole show, it gives me goose bumps every time," Daniel agrees.
"It starts hesitantly then builds into this beautiful crescendo.
"Lyrically it's very clever and to a certain extent it is open, ambiguous and up for interpretation.
"Songs like that seep into our subconscious. It can mean something to everyone.
"That's what I love about it and I think that's what most people, even if they don't realise it, love about it."
So what is it about the story of Once, and the unlikely love story at its centre, that continues to resonate with audiences?
"It's real… it's no fairy tale", Daniel muses.
"We've all had that once-in-a-lifetime moment when we met someone who turned on the light in our eyes.
"Did we fall in love and sail off into the sunset? Or was it just for that moment in time?
"You'll have some questions for yourself after you see the show. I think that's why people keep coming back."
"I think the show resonates with so many people because it"s a story of love and friendship that isn't overly romanticised", Emma adds.
"Once is truthful and bare, which I think is what so many people love about it."
Daniel and Emma are excited to share the show with new audiences when it comes to Brighton
for the first time in April.
"It really is the most relatable musical I have ever come across", says Emma.
"So many of my friends and family have come to watch - from my eighty-year-old granny who loves classical music to my seventeen-year-old brother who only listens to heavy metal - and everyone has loved it.
"Anyone seeing the show for the first time can expect to laugh, cry and listen to some of the most heart-wrenching music they'll ever hear played live."
Daniel adds; "Once isn't just a big emotional love story - it's also hilarious.
"For a night out at the theatre it has everything you could ever ask for. Great music, beautiful story, comedy, emotion and drama.
"I felt this from the very first time I saw the show in the West End sitting in the audience and wishing that one day I'd get to be in it. Dreams, eh..."
Once comes to Theatre Royal Brighton from Monday 20th – Saturday 25th April 2020. For more information and tickets visit atgtickets.com/brighton.