AC/DC - And Then There Was Rock: Life Before Brian Unauthorized is a riveting documentary that offers a deep-dive exploration into the life and journey of one of the most iconic rock bands, AC/DC, before the addition of Brian Johnson, their second and current lead vocalist.

Entering the scene in the 1970s, the Australian hard rock band AC/DC quickly cemented its place in the annals of rock 'n roll greatness. However, the captivating documentary goes back to the band's roots, skillfully tracing its formation and early years that largely served as a prelude to their global domination of the rock scene. It provides viewers with a glimpse into the band's formation and the early dynamics that shaped their unique sound and style, shedding light on how their original lead singer, Bon Scott, played a vital role in the band's early success without forgetting the invaluable contribution of other original band members.

The title, "And Then There Was Rock: Life Before Brian Unauthorized" unmistakably refers to a distinctive phase in the band’s history - a period before Brian Johnson joined as the lead vocalist after Bon Scott's tragic demise. The documentary doesn’t merely focus on offering a chronological account of events but aims to photograph a vivid picture of the band's struggles, victories, and the evolution of their music style, thus emphasizing the fact that the band had indeed made considerable strides in the rock music landscape even before Johnson's entrance.

Offering a blend of interview snippets, rare archival footage, and exclusive photos, the film features a plethora of commentaries from musicians, journalists, and music aficionados, painting a complete and immersive picture of AC/DC's early journey. It delves into the camaraderie and conflicts among the band members, their initial collaboration, and how their shared dedication to music led them to produce some of the most memorable rock anthems.

"And Then There Was Rock: Life Before Brian Unauthorized" also devotes a significant section to the celebration of Bon Scott’s tenure as the lead vocalist. The film magnificently unpacks how Scott’s energetic performances, coupled with his signature raw vocal style, played an instrumental role in setting the brand's image. His untimely and tragic death was undoubtedly a major setback for the band, forever changing its course and catalyzing a new era with Brian Johnson.

While the stellar career of AC/DC with Brian Johnson as the frontman is well-documented, this very documentary provides insights into the band's journey preceding his arrival, underlining the often-underestimated significance of their early achievements. The film underscores the band's resilience, inherent-focused vision, and the invincible spirit that helped them bounce back after Scott's irreplaceable loss, providing a profound understanding of why AC/DC is revered as a groundbreaking band in rock music.

Depicted through the lens of an unauthorized narrative, this documentary does not clamp itself with official approvals or narrations. It spins an unfiltered and unadulterated story, weaving an informative, engaging, and emotional narrative that touches upon the unvarnished truth, preserving the authenticity of the subject matter at its core.

Overall, "AC/DC - And Then There Was Rock: Life Before Brian Unauthorized" stands as an enthralling watch for both die-hard AC/DC fans and new initiates to the fandom. It steers clear of being a mere biographical recount or a sanitized official band history and serves instead as a unique exploration of the band’s early days. This captivating chronicle cogently argues that AC/DC’s claim to the Rock 'n Roll throne had been manifest long before Brian Johnson's arrival, revealing a fresh perspective on the rock icons' life and music.