Here is the story behind this collection and why it remains a "holy grail" for fans of the Bon Scott era. The Origins: FM Radio Gold
While is a compilation that surfaced prominently in 2023 digital circles (often in high-quality FLAC format), it is an unofficial release (bootleg) consisting of FM radio broadcasts from the late 1970s.
Because these were radio broadcasts, the audio quality is often surprisingly high, which is why fans seek out the FLAC versions to preserve every ounce of detail in Angus's searing solos. The Tracklist: A "Greatest Hits" of the 70s