As we told you earlier this week, Fall Out Boy were among the performers who took part in this year's Victoria's Secret Fashion Show.

The event, which was held last night in New York, will air Tuesday, Dec. 10 at 10 p.m. EST on CBS.

The show featured six segments, “British Invasion,” “Birds of Paradise,” “Parisian Nights,” “Shipwrecked,” “Snow Angels” and “PINK Network,” and, as indicated by their activity on social media, Fall Out Boy were included in at least the first.

The band were apparently joined by pop star Taylor Swift who, according to her own Twitter, lent her vocals to “My Songs Know What You Did In The Dark (Light Em Up).”

T-Swift is, of course, no stranger to “My Songs Know…” Back in July, FOB frontman Patrick Stump joined Taylor as the surprise guest for her appearance in New Jersey, where the duo performed the group's hit. Check out a video of that collaboration below:

Both Fall Out Boy and Swift have reputations for taking part in unlikely musical pairings. Taylor has, in recent years, collaborated with the likes of Paramore, Jimmy Eat World, and Tegan And Sara, while Fall Out Boy most recently taped an episode of CMT Crossroads with The Band Perry.

Will you be tuning in to watch Fall Out Boy cross paths with Taylor?