We're counting down the 12 Days of Christmas with daily mini-episodes spotlighting a classic holiday song and featuring an interview with the writer. On this third day of Christmas, we explore "Santa Baby" with co-writer Phil Springer. The former Brill Building writer (who was 91 at the time of our interview) tells us all about the creation of the holiday hit that's since been covered by Madonna, Michael Buble, Taylor Swift, Kylie Minogue, Ariana Grande, Trisha Yearwood, Gwen Stefani, and many more!