This year marks the 50th anniversary of the Allman Brothers Band, whose first rehearsal together took place on March 26th.

Related: Inside The First-Ever Allman Brothers Band Rehearsal

In honor of the important milestone, Sirius XM’s JamOn (ch. 29) is giving listeners the exclusive first listen of an unreleased Allman Brothers Band concert album captured live at San Francisco, CA’s Fillmore West in 1971, which is officially due out later this year.

The Allman Brothers Band: Fillmore West 1971 premieres on JamOn tomorrow, Tuesday, March 26th at 2:00 pm ET, hosted by former ABB guitarist Warren Haynes and his wife, JamOn’s own Stef Scamardo. The segment will air again at various times throughout the week.

The counterpart to 1971’s live album At Fillmore East, the forthcoming record is expected to include the top performances from the January 29th performance–which happened just a month before the legendary NYC run that would go on to become a platinum-certified live album. It was only eight months later that bandleader and guitar virtuoso Duane Allman died in a motorcycle accident. Original bassist Berry Oakley Jr. died one year later in almost the exact same place. In honor of the original lineup–which also featured Gregg Allman, Butch Trucks, Jaimoe, and Dickey Betts–the Allman Brothers Band continued to tour with a rotating lineup for 45 years and officially had their final show in 2014.

According to a 2017 interview with longtime Allman Brothers Band manager Bert Holman, there’s still a great deal of music in the Allman Brothers Band archives that has yet to be released via the band’s own label and RED distribution. “We’ll keep putting things out as long as there’s an appetite for it,” Holman told Billboard. “There’s a great deal of material [left], and still a lot of interest in hearing these things, we think.”

Check out the full schedule below and pick a time to listen to this unreleased live Allman Brothers gem on SiriusXM’s JamOn (ch. 29) this week.

The Allman Brothers Band: Fillmore West 1971 – Airtime Schedule

Tuesday 3/26 @ 2pm ET
Weds 3/27 @ 11am ET
Thursday 3/28 @ 6pm ET
Friday 3/29 @ 8am ET
Saturday 3/30 @ 3pm ET
Sunday 3/31 @ Noon ET