Songfacts®:

• This is the third single from Luke Bryan's second album, Doin' My Thing. He wrote the song with his producer, Jeff Stevens.
• The song finds Bryan confronting his girl after she asked for a break from their relationship, only for him to see her later sitting in a truck with another guy in her driveway.
• Bryan and Stevens penned the song as the two colleagues traveled together while Luke was on tour. The producer told The Boot the story of the tune: "'Someone Else Calling You Baby' was written from that raw emotion that you feel when someone you love rejects you," explained Stevens. "Just about everybody knows the feeling and it was easy to write because it's something you never forget when it happens to you. It's one of those powerful, unexpected events that changes your life in an instant. I was on Luke's bus somewhere out on the road and he started singing some of the first verse off the top of his head and I thought, 'Yeah I've been there.' We wrote it in just a few minutes - the big guitar lick and all."
• Bryan told The Boot that while the choice of the first two singles from his Doin' My Thing was clear, when it came to the third, there were several options. "We knew 'Do I' was the runaway first single, and we really knew that 'Rain' was the second," Bryan explained. "We got to 'Someone Else Calling You Baby,' and we had hundreds of conversations and pulled everybody in together to talk about it, probably a little too many. We narrowed it down to 'What Country Is,' 'Every Time I See You' and 'Someone Else Calling You Baby.'""'What Country Is,' I worship that song," the Georgia singer added. "I absolutely love it, but we felt that people kind of know that about me. When we looked at 'Someone Else Calling You Baby,' I just felt like it was a great, driving, uptempo song, and it was something everybody relates to again. When you hear that chorus one time, you don't really have to hear it many more times, and it's with you. I just felt like I needed that kind of song."
• The song became Bryan's second Country chart-topper when it climbed to #1 on the chart dated February 26, 2011.