Houston is a cosmopolitan city, with examples of nearly every culture on earth spread throughout town. The same goes for its music scene. Every genre and style is represented in this city, even nascent movements like the so-called "freak folk" scene. Artists like Fleet Foxes, Wooden Wand and Houston's Finnegan use acoustic instruments and a DIY attitude to utterly recreate what had become a stale genre.
Finnegan primarily employee two acoustic guitars, drums and a casio, but there's some electric guitar and bass in there, along with the occasional flute and cello.
You can check them out at their ReverbNation page.