Featuring the yelping vocals and visionary, occasionally demented lyrics of Roky Erickson, the 13th Floor Elevators were one of the original acid-rock bands. Formed in Texas in the mid-60s, the Elevators started as a garage rock outfit, scoring their one and only modest national hit with "You`re Gonna Miss Me." While Erickson`s loopy persona, along with Tommy Hall`s odd "jug" percussion, were the band`s most distinguishing features, several members of the group`s original lineup contributed strong material to their albums. Although these inconsistent efforts sometimes wander off into a cloudy haze, they also include sturdy folk-rock tunes and driving psychedelic rockers. Trips to San Francisco established the group as up-and-coming underground favorites, but Erickson`s drug problems led to the singer`s commission to a state mental hospital in the late `60s, an ordeal from which he has never fully recovered.