Core Insights - Taylor Swift has established a billion-dollar empire through her music career, starting from a young age and becoming the youngest songwriter to sign a publishing deal with Sony at 15 [1][2] Group 1: Songwriting and Collaborations - Swift emphasizes the importance of her storytelling and songwriting, stating that her success is tied to her writing her own songs [2] - She has collaborated with notable producers and songwriters, including Max Martin and Shellback, but is credited as the lead writer on every song she has released [2] - Swift is credited as the sole songwriter on over 60 tracks in her discography, showcasing her significant contribution to her music [3]