Ianto had gone out with Owen on an alert. With the Weevils back in the sewer, they were driving back, Owen grumbling about the songs playing on the radio.

Ianto sighed. "I can turn them off, you know."

"…completely inappropriate, a bunch of useless drivel, if you ask—huh?" he paused, only now hearing Ianto's question. "No, it's… uh, it's fine."

Ianto looked at him questioningly, but didn't push it further. It wasn't until five minutes later, when he saw Owen tapping a finger along to the music, that Ianto got an idea. He turned the volume up a notch to see if he was correct.

Owen, possibly without even knowing it, started bopping his head.

Ianto turned the volume up again, surprised to note that Owen was mumbling along to the words. He grinned. "I never pegged you for a caroler."

Owen stopped and cleared his throat, clearly embarrassed. "Yeah, well…"

Ianto widened his smile. "I won't tell, I promise."

And joined in with the singing.