in addition to this, most markets in wlac's night-time coverage area now had black oriented stations of their own, most of which attracted the demographic groups that formerly listened to allen, richbourg, and nobles' shows as their only source for r&b and soul music. furthermore, musical tastes among younger listeners in particular changed in divergent directions as the 1970s approached, as white youth began to prefer the hard rock that initially modeled itself on the blues (especially on the upstart fm stations that began playing it), while african-american kids gravitated toward the grittier edges of funk or early disco and, eventually, rap. this made the motown, muscle shoals, and memphis sounds favored by the dj trio seem passé, and the hosts' audience, unsurprisingly, began to age, something almost always unattractive to radio station managers. changing tastes also brought about an imminent demise to record labels such as stax, which were major suppliers of music heard on the r&b/soul shows.