Lurking underneath the unfettered joy of Chicano Batman’s version of Woody Guthrie’s “This Land Is Your Land” is a tension. The performance and enthusiasm could not be more infectious, but ... it was created for a whiskey commercial (for Johnnie Walker) that aired during this year’s Grammys. And it was released two days before the inauguration of President Donald Trump and implicitly exposes the song’s political roots.

And therein lies the track’s magic. It’s so fully convincing that it doesn’t feel like selling out. And you won’t catch a whiff of protest from it, because the unwavering brightness is the protest.

Donovan helped initiate the ’60s psychedelic revolution with his number-one hit “Sunshine Superman.” To commemorate its 50th anniversary, the Scottish singer, songwriter, and guitarist is touring America – including a June 10 stop at the Adler Theatre.

The backing musicians on the single (and the album that shares its name) included Jimmy Page and John Paul Jones shortly before they formed Led Zeppelin. Donovan discussed these matters as well as his friendship and interactions with the Beatles in a recent e-mail interview.

It was a sign of the times when the Downtown Davenport Partnership announced last month that it would replace the River Roots Live outdoor music festival – after a 12-year run – with a multi-venue indoor festival called Alternating Currents.

Consider what’s happened over the past two years. The Mississippi Valley Blues Festival was canceled in 2015 because of financial difficulties at its parent organization. The motorcycle-themed Rally on the River, a fixture on the riverfront for more than two decades, didn’t return in 2016.

All of these things reflect a simple reality: Outdoor festivals are expensive to put on, period, and the cost is much higher with headliner acts to drive attendance. Such events represent a serious financial gamble: Just the chance of rain on one day can depress turnout enough to put a festival in the red, and Mississippi River flooding can force an expensive change of venue.

But let’s not mourn River Roots Live too much. If its death underlines the inherent risk of outdoor musical festivals, its replacement shows just how vibrant the Quad Cities music scene has become.

If you want to know the secret of Sister Wife’s Trap House, you probably shouldn’t ask the Quad Cities-based duo of guitarist/vocalist Samuel Carothers and drummer Matthew Ashegiri. They work largely by instinct, and on this album those instincts are – far more often than not – startlingly spot-on.

Not yet two years old, the band has worked with producers – on a single for Milwaukee’s Honeytone Records and an EP – but chose to go it alone for Trap House, the debut album Carothers and Ashegiri self-released last week.