Fusebox is arguably Austin’s edgiest and most-sophisticated festival. And it’s also the most indie. So forget corporate-sponsored side parties and stages branded with junk food logos.

And forget pricey badges or hard-to-get wristbands.  Three years ago, the nonprofit festival opted to make the entire line-up free.

Some events do require prior reservations. But in this blog we’re highlighting a few choice happenings that require no reservations.

What: “Austin Revolutions Per Minute”

When: Come and go as you please, 2 to 5 p.m. Saturday

Music historian Jason Mellard created a fascinating way to celebrate Austin’s music legacy and the ephemeral experience of the self-proclaimed “Live Music Capital of the World.”

DANNY GARRETT. Muddy Waters. Antone’s. April 18 22, 1978.  Courtesy of the Wittliff Collections, Texas State University.

On Saturday, you can stop by a series of vinyl record listening rooms with playlists curated by  record collectors, authors, artists and students of the city’s music history, and relish in the analogue nature of records.

Each of four locations offer a different genre where you can shrug off the algorithmic anonymity of Spotify playlists .

For psychedelic sounds and country music go to the South Austin Popular Culture Center, 1516 S. Lamar Blvd.

Blues and jazz will be featured at the Historic Victory Grill, 1104 E. 11th St.

At the Texas Music Museum, 1009 E. 11th St., it’s Tejano taking center stage.

And at the Local Pub & Patio, 2610 Guadalupe St., punk music plays.

JIM FRANKLIN. Poster for opening of Armadillo World Headquarters. August 7 & 8, 1970. Courtesy of the Wittliff Collections, Texas State University.