"Pop! Goes My Heart" is a song by Hugh Grant from the soundtrack of the movie "Music and Lyrics". The song is about falling in love unexpectedly and being unable to resist the feeling. Grant sings about how his heart "pops" every time he looks into his partner's eyes and how every word they speak is a lullaby to him. The lyrics describe how the person makes life worthwhile and how they feel like gold and silver. The song tells a story of two people who share precious moments together and want to escape reality to go somewhere far away where they can just play and be with each other. Despite not wanting to lose his head or fall in love again, Grant's heart pops and he can't let go of the feeling. Overall, "Pop! Goes My Heart" is about the joy and excitement of falling in love unexpectedly and being unable to resist it.