Spiritual Rez hails from Boston, but the band’s funkified mix of reggae, roots rock and ska could have come straight out of Southern California (or Bend, for that matter).

The sunny and cheerful “Apocalypse Whenever,” despite its heady title and lyrical forays into social consciousness, is a musical party. Songs swing from the band’s reggae base into free-form jazz freakouts one minute, Deadhead-style extended jams the next, all underscored with the occasional thrashy guitar solo or chugging riff.

The seven-piece band honed its self-described “volcanic reggae, rock, ska and jam” sound during a decade-plus of touring. The group has shared stages with reggae elder statesmen Toots and the Maytals, gypsy-punk mainstay Gogol Bordello, funk institution George Clinton and Parliament Funkadelic and party-meister Jimmy Buffett, drawing influence from them all along the way.

“Apocalypse Whenever” is the result — an album that manages to be all over the place while still delivering a sound that’s familiar and, perhaps more importantly, easy to dance to.

The volcanic reggae-roots-rock dance party lands at McMenamin’s Old St. Francis School in Bend on Wednesday.

Spiritual Rez; 7 p.m. Wednesday; free; McMenamin’s Old St. Francis School, 700 NW Bond St., Bend; www.mcmenamins.com or 541-382-5174.

— Brian McElhiney