Since 1994, singer-songwriter Keller Williams has been releasing eclectic albums, showcasing his versatility as a musician. He combines reggae, bluegrass, and rock into his songs that even include a bit of beat boxing and whistling. The guy does just about everything, and his best songs (think “Freaker by the Speaker” and “Doobie in My Pocket”). He performs tonight at 8 at the Beachland Ballroom.