Atlantic/Swan SongA compilation of all of Led Zeppelin‘s BBC radio session arrives Friday. The set — an expanded edition of a collection first complied in 1997 — pulls together all the extant material the band recorded for radio broadcasts or performed live over the air from 1969 to 1971. Guitarist Jimmy Page says the sessions were crucial to building the band’s popularity in its native country.

“Because we spent so much time in the States in the beginning, we weren’t able to do so much in England,” Page tells Rolling Stone. “And we didn’t have radio here like what was called underground radio over there. So we got these little slots on the BBC.”

Page says listening back to the young Zeppelin he’s impressed by the band’s boldness. “Considering that we only had these limited opportunities for exposure over here in Britain, it’s just the fact that we were totally fearless,” Page says. “You can hear the energy and the attitude — and the fact that we could go in there and make up numbers but not tell the people in the control room.”

To promote the release Page is hosting a Facebook Live stream listening event from Olympic Studios in London today. The intimate event — hosted by BBC DJ Johnnie Walker — will include conversation with the guitarist, who served as producer on the project. The session begin at 2:30 p.m. ET.

The world premiere of a new video for “What Is and What Should Never Be” will conclude the evening. Directed by Ariel Costa, the monochromatic video will meld a classic live Zeppelin performance with animation.

The Complete BBC Sessions, including eight previously unreleased recordings, three of which come from an April 1969 session that had long been considered lost, is set for release this Friday, September 16.

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