In the world of mashups, sometimes two songs sound so seamless when paired together that you wonder what took so long for someone to make the match.

Making the rounds since January, tbc aka Instamatic floats Sia’s “Breathe Me” under Fleetwood Mac’s “Rihannon (Will You Ever Win),” a combination that’s nothing short of magical.

“I think it has a great ambient mood, and makes me think of birds and wind and Welsh goddesses,” says the London artist, who’s been mashing up songs since 2003.

“Her Breath Is The Wind (Rihannon’s Breath)” has even got Sia’s attention. Late last week, the singer-songwriter shared a link to tbc’s gorgeous musical marriage, tweeting, “pretty interesting mash up of breathe me and fleetwood mac!”

It’s not the first time tbc has worked some mashup magic involving The Mac. Check out “The Golden Mirror,” which pairs “Gold Dust Woman” with Elbow’s “Mirrorball.”

Free download of Sia vs. Fleetwood Mac – “Her Breath Is The Wind” (Rihannon’s Breath) via Mutant Pop.