On September 30, Bob Weir, formerly of the Grateful Dead (and currently of Dead & Company), will release his first new solo record in a decade. Blue Mountain (out via Columbia/Legacy Recordings) is also Weir’s first LP of entirely new material in 30 years. Today, he’s shared the album-opening track “Only a River.” It features performances by Aaron Dessner (electric guitar) and Scott Devendorf (bass, vocals) of the National. Josh Kaufman, Ray Rizzo, and Rob Burger also play on the song. Hear “Only a River” below, via NPR.

Earlier this year, Aaron Dessner and his twin brother Bryce produced the massive Grateful Dead tribute album Day of the Dead. This past weekend, they brought together a group of musicians to perform songs from the album at Eaux Claires Music & Arts Festival. Among those who played with the Dessners were Bon Iver’s Justin Vernon, Will Oldham, Jenny Lewis, Phosphorescent’s Matt Houck, So Percussion, Bruce Hornsby, and Megafaun’s Phil Cook.

Read Pitchfork’s feature, “Grateful Dead Live On: Why the Legendary Band Still Matters.”

Watch “Liner Notes: An Annotated Look at the Grateful Dead” on Pitchfork.tv: