What does it really take to write a Christmas song that lasts forever? Singer, songwriter and producer Charlie Puth sits down with Kristin Robinson on Billboard On The Record to unpack the magic behind holiday hits, from the one chord that seems to appear in nearly every classic to the ’60s influences that continue to shape today’s festive favorites. Puth shares how he once wrote a Christmas song in just an hour, why some tracks become seasonal standards almost by accident and how artists balance tradition with originality when creating holiday music. He also takes listeners inside piano sessions, highlights his favorite Christmas albums and songs, answers rapid-fire holiday questions and reflects on how the craft of songwriting has evolved, all while offering a sneak peek at what’s next for his own music.