Complex sentence: His success was short-lived as subsequent releases did not sell but, by 1954, Williams started to perform on a regular basis on Houston's radio station, KLVL, and began a constant touring regime across the South.
Split into simpler sentences: His success was short-lived, as subsequent releases did not sell well. By 1954, Williams was performing regularly on the Houston radio station KLVL, and he began a constant touring regime across the South.