Blending together the folksy and the fiery can be cartoonish if not executed properly. On paper, adding a ukulele to a pop-punk band’s arsenal seems like a eyebrow-raising proposition, calling to mind the hair-teasing days of MySpace’s stronghold over alternative music rather than today’s heart-rending version of the same genre. Luckily for The Sonder Bombs, the uke enhances the band’s self-assured humor and balance, creating a dynamic, nuanced counterpoint to frontwoman Willow Hawks’ acrobatic vocals and shimmering guitars.