Few musicians embody the ecstatic, beer-soaked spirit of the DIY underground like Chad Matheny, the force behind long-running noise-folk outfit Emperor X. The Florida-born, L.A.-based Matheny's hooky tunes are delivered in the singer's high-pitched, over-enunciative drawl and explore in aching detail the inevitable highs and lows that come with a lifetime spent on the road. Indiana duo Busman's Holiday, composed of brothers Lewis and Addison Rogers, plays lo-fi, orchestral pop that incorporates odd instruments and old-timey vocal harmonies. But there is a subtle punk spirit that runs throughout the music of all the acts playing Wednesday's so-called "Horse Fest," including Werewolves frontman Wyatt Strother and Titans of Filth's Sam Grindstaff, both of whom will play solo sets of their hiccupy, endearing folk-punk.