it's a pretty big leap from big star to captain beefheart (who i never got into; never was a zappa fan either despite earnest effort). what i suspect may be offputting to some about big star is how they pushed the boundaries of traditional melodic pop--there's an abrasiveness to some of their tunes + at least on the first two records they sing in such a high register as to sound unnatural.
as a related aside, check out "thank you, friends: big star's third live," a very nicely done tribute by various dbs/rem/posies, etc.
as a related aside, check out "thank you, friends: big star's third live," a very nicely done tribute by various dbs/rem/posies, etc.