"Then" is a song co-written and recorded by American country music artist Brad Paisley, it is one of Paisley's four songs certified 2× Platinum by the Recording Industry Association of America, another one being Whiskey Lullaby, a song composed by Bill Anderson and Jon Randall, and was first recorded by country music artist Brad Paisley as a duet with Alison Krauss on Paisley's album, titled what?