There are times when the thing you want most is not a big, important movie but a simple, beautiful story told with sensitivity, warmth, humor and a big heart. Times when you don't need a movie to save your life, you just need a movie to make you feel good.
Owen Gleiberman, Entertainment Weekly
I'm glad, I seriously am, that John Carney wants to make deeply and embarrassingly sincere musical movies, and I hope he keeps on making them, but let's also hope he realizes that when it comes to Once, once was enough.
Peter Debruge, Variety
Another upbeat outing in which characters strum their way through tricky emotional situations.
Laremy Legel, Film.com
Plays like an endless and quickly tiresome string of movie montages.
David Rooney, Hollywood Reporter
The film's quiet pleasures creep up on you.
Sam Woolf, We Got This Covered
Can a Song Save Your Life? is overproduced, and more than a little fake. But it carries a sweet, and catchy tune that will likely win you over
Drew McWeeny, HitFix
Songs and films save my life every day, and I suspect John Carney's latest will be embraced by audiences everywhere who feel the same way.
Noel Murray, The Dissolve
By the end of this movie I was so far in the tank for it that my opinion probably can't be trusted.
Linda Holmes, NPR.org
For a movie that could have come off like a Hollywood version of something beautiful and tiny, it's actually quite successful.
Eric Kohn, indieWIRE
Moving along at a reasonably engaging pace, it foregrounds the actor's investment in the scenario and makes it relatable.
Paul MacInnes, Guardian [UK]
Could just one number, performed weedily by Keira Knightley at the beginning of this romcom, cause your body to self-combust at the prospect of enduring 90-odd minutes of a movie obsessed with authenticity but as phoney as a Miley Cyrus dance routine?
Chris Bumbray, JoBlo's Movie Emporium
Will leave a smile on the face of even the most cynical viewers. Impossible not to like.
Mark Adams, Screen International
A warm-hearted pleasure with a whole lot of soul, and effortlessly propelled forward by charming and compassionate performances by Keira Knightley and Mark Ruffalo.
Erik Davis, Movies.com
A lovely story that's sweet, funny and heartfelt -- and man does it sound good.
Kevin Jagernauth, The Playlist
...director John Carney is traveling over the same ground as he did with Once, though the results are far less potent...Can A Song Save Your Life? is a rhetorical question in the grand scheme of a film that offers little stakes.