Under the apt moniker Billy Strings, 24-year-old William Apostol plays the kind of bluegrass you are meant to move to at music clubs. On his six-song EP from 2016, Strings gives listeners uptempo, locomotive rhythms and soulful country vocals that resonate with Southern flair and urgency. The lively "Slow Train" is anything but pokey, and on "Dos Banjos," Strings asks an exceedingly timely question: "What will you do when everything you listen to is all a lie?" His quickened, bluesy version of traditional folk classic "Red Rocking Chair" is nothing short of brilliant. Also, expect new tunes from his first full-length album, "Turmoil & Tinfoil," due out on September 22.