Time flies when you're rocking out! Longtime PBS staple 'Austin City Limits' is celebrating its 40th anniversary this year and to kick off the new season, there's an all-star concert airing tonight (Oct. 3), featuring, among others, Foo Fighters.

The band's performance of the Roky Erickson classic 'Two Headed Dog (Red Temple Prayer)' is one of the highlights of the special and has been released early to tease this music event.

Frontman Dave Grohl says in the clip above, "As a kid growing up watching 'Austin City Limits' on television, it was a huge honor to be invited here to play with the Foo Fighters here years ago. And it's a huge honor to be back on this stage performing a song by one of Austin's greatest heroes, Roky Erickson."

The special features guest hosts Jeff Bridges, Sheryl Crow and Matthew McConaughey and will air over two hours from 9-11PM ET this evening as part of the PBS Arts Fall Festival. The show will feature a number of unique pairings and musicians from a variety of genres coming together to celebrate the 'Austin City Limits' history.

Some of the performers include Alabama Shakes, Gary Clark Jr., Buddy Guy, Bonnie Raitt, Robert Randolph, Kenny Wayne Shepherd, Willie Nelson, Double Trouble, Lyle Lovett, Emmylou Harris, Kris Kristofferson, Jimmy Vaughan and more.

And stay tuned in the coming weeks for more of 'Austin City Limits' 40th Anniversary season, including an Oct. 18 performance featuring Nine Inch Nails.