Watch Preview: Wilco's Jeff Tweedy and Son Spencer Set for 'CBS This Morning: Saturday'

Courtesy of CBS
Jeff Tweedy photographed during a performance for CBS This Morning: Saturday in June 2015.

There's a scene in the Nick Offerman-directed music video for Tweedy's "Low Key" in which a perpetually straight-faced Jeff Tweedy and his 19-year-old drummer son Spencer -- both clad in three-piece suits -- enter a workout class called "Get Happy."

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Sandwiched between a group of dancers euphorically swaying to the song's lyrics, "No, I won't jump for joy, I don't/If I get excited nobody knows," the father-son duo eventually crack a smile, bust a move and, well, get happy.

That moment and those lyrics somewhat poignantly played out one Tuesday morning when Tweedy, the Wilco frontman's latest project, performed three tracks at CBS's midtown Manhattan studio for a segment slated to air Saturday, July 4, on CBS This Morning: Saturday.

While nearly a dozen stoked crew members buzzed around the studio -- some even pausing to snap photos of the crushed-velvet lined guitar cases that lay open -- Tweedy ran straight through the music, with Jeff only pausing for a joke when his monitor went out.

"That was gonna be great," he said. After playing "Wait For Love," a lilting track in 6/8 time, he noted, "We nailed the same flub that's on the record," and in declining to re-film it, affirmed that clearly Tweedy values presenting the material -- warts and all.

Released last September, the band's debut album, Sukierae, derives its title from a nickname of Jeff's wife, Suzie Miller, who was diagnosed with a rare form of non-Hodgkins lymphoma while tracking of the record was wrapping a year-and-a-half ago. Jeff has spoken openly about the project and its accompanying tour as a form of therapy for the entire family, who will appear on the segment. 

When filming wrapped, in the same way that the guys eventually show their playful side in the music video, Jeff and Spencer-- who has inherited his dad's eyes, nose and mellow disposition-- stepped out of their low-key persona, smiling and high-fiving one another just before walking off set.

You can watch Anthony Mason's interview, as well as a performance from the band, July 4 on CBS This Morning: Saturday.