Music history of the United States in the 1960s and symphonic music, is often taken as the key recording in progressive rock, helping the widespread adoption of the genre in the early 1970s among existing blues rock and psychedelic bands, as well as newly formed acts. Chubby Checker during the early 1960s popularizes the enduring dance craze The Twist with his hit cover of Hank Ballard's R&B hit "The Twist". Gerry Goffin and Carole King become a very influential duo in pop music, writing numerous number one hits including the first song to ever reach number one by a girl group, The Shirelles "Will You Love Me Tomorrow" and
The Boy Who Was a King term. The film presents not only the life of the former Tsar, but also intertwines within the story vignettes of various Bulgarians, who were supporting him, sending him gifts, or merely tattooing his face on their body. The story is told through personal footage and vast amounts of archive material. The film received praise for its editing and use of archives with Variety's Robert Koehler writing that "Pic’s terrific use of archival footage includes an exiled Simeon interviewed in the early ’60s, disputing his playboy rep." and "Editing is aces." The Boy Who Was a King The Boy Who Was