Ever wonder how it is that Taylor Swift manages to keep so many hot songs successfully under wraps until they’re ready for release? Well... Ed Sheeran broke it down via Vanity Fair

“I remember when I did a song with [Taylor] for her album, I was in San Francisco, and they sent someone with a locked briefcase with an iPad and one song on it. They flew to San Francisco and played the song I’ve done with her and asked if I like it...I was like, ‘Yeah,’ and they took it back. That’s how I hear it.”

Makes sense! I mean just look at how she eliminates playing “End Game” loud around even the background dancers!