Immediately after the recording of "Salt Lick", Greig was replaced by bassist Billy Ethridge, a bandmate of Stevie Ray Vaughan, and Mitchell was replaced by Frank Beard of American Blues. Both songs credited Gibbons as the composer. They released their first single, "Salt Lick", in 1969, and the B-side contained the song "Miller's Farm". ZZ Top was managed by Bill Ham, a Waxahachie, Texas, native who had befriended Gibbons a year earlier. He then figured that "king is going at the top" which brought him to "ZZ Top". Hill and thought of combining the two into "ZZ King", but considered it too similar to the original name. The band had a small apartment covered with concert posters and he noticed that many performers' names used initials. The original line-up was formed in Houston and consisted of Gibbons, bassist/organist Lanier Greig, and drummer Dan Mitchell.