By Simon Vozick-Levinson
May 08, 2009 at 09:02 AM EDT

Picking the right song to accompany a walk down the aisle is always serious business. But picking the perfect song for prime-time TV’s most romantic wedding ever (or at least this season)? You’d better choose carefully.

The special song playing for the wedding on tonight’s 100th episode of ABC’s Grey’s Anatomy was “Turn to Stone,” a brand-new tune by singer-songwriter Ingrid Michaelson — no stranger to Grey’s, herself. And right now the Music Mix is the only place you can hear “Turn to Stone” in full for free…unless you DVRed tonight’s episode and are rewinding those vows over and over again, in which case we will totally not judge you.

Michaelson is currently finishing up her second album for a fall ’09 release. Though “Turn to Stone” won’t be on there, you can buy the Grey’s wedding song as a single on iTunes now. But first, give it a free listen or several below and let us know what you think!

More from EW’s Music Mix:
One Tree Hill‘s Kate Voegele on her new album, her dual identity, and the season finale
What’s the best rainy-day song of all time?
EW’s 50 Most Heartbreaking Songs of All Time
We goofed! Ten heartbreaking songs we wish we’d included