Led Zeppelin have released a 35-second trailer for The Complete BBC Sessions. The three-disc set will be available on Sept. 16. You can watch the new clip above.

This set collects the two dozen songs found on 1997's BBC Sessions, and adds nine additional tracks to a third CD. All but one of the songs – "White Summer," which was combined with "Black Mountain Side" on the 1990 Led Zeppelin box set – is previously unreleased.

The new cuts include two versions each of "Communication Breakdown" and "What Is and What Should Never Be," as well as another take of "Dazed and Confused," which shows up two more times on The Complete BBC Sessions. You can see the track listing for the album below.

A couple weeks ago the band premiered one of the new versions of "Communication Breakdown." The trailer offers a brief taste of another new song, "What Is and What Should Never Be."

The promo clip also breezes through some of the collection's various configurations, which include a three-CD Deluxe Edition with the remastered original album and a third disc of unreleased tracks; five-LP Deluxe Edition Vinyl with remastered original album and an LP of unreleased trcaks on 180-gram vinyl; Digital Download of both the remastered album and unreleased songs; and a Super Deluxe Boxed Set, which includes three CDs, five LPs, high-def audio download card of all tracks at 96kHz/24 bit; 48-page book of photos and session information and a high-quality print of the original album cover.

Led Zeppelin, 'The Complete BBC Sessions' Track Listing

Disc One
"You Shook Me"
"I Can't Quit You Baby"
"Communication Breakdown"
"Dazed and Confused"
"The Girl I Love She Got Long Black Wavy Hair"
"What Is And What Should Never Be"
"Communication Breakdown"
"Travelling Riverside Blues"
"Whole Lotta Love"
"Somethin' Else"
"Communication Breakdown"
"I Can't Quit You Baby"
"You Shook Me"
"How Many More Times"

Disc Two
"Immigrant Song"
"Heartbreaker"
"Since I've Been Loving You"
"Black Dog"
"Dazed and Confused"
"Stairway to Heaven"
"Going to California"
"That's The Way"
"Whole Lotta Love (Medley: Boogie Chillun/Fixin' to Die/That's Alright Mama/A Mess of Blues)"
"Thank You"

Disc Three
"Communication Breakdown"
"What Is and What Should Never Be"
"Dazed and Confused"
"White Summer"
"What Is and What Should Never Be"
"Communication Breakdown"
"I Can't Quit You Baby"
"You Shook Me"
"Sunshine Woman"

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