^^ I know that song! Didn't know they were sibs. Two guys and a girl?
Here's something, don't know if they're sibs ...
I might be a bit too enamored of stuff like this, but I LOVE drawing lines from really old groups to the groups we love: Four Freshman ... Beach Boys .... +/- Beatles (even though contemporaries, I think the Beach Boys inspired the Lads from Liverpool too). I think one thing that makes the Beatles special is that
so many lines can be drawn to them - harmonies like the Everly's, Country/Rockabilly like Carl Perkins, RxB like Little Richard/Chuck Berry/Jerry Lee Lewis/Isley's, harmonies like the Shirelles and Shangri-Las, Soul like Arthur Alexander ... Lots of groups were good, but I think most probably had one or maybe two obvious influences (Stones >> Muddy Water-type blues, for example). But the Beatles were so diverse in their influences, they were untouchable, IMHO.
I've looked a few times for some obvious lines from the Andrews Sisters to the Beatles, maybe via the black girl groups of the mid- to late-50's, but never have been able to do that. Maybe the connection just isn't there, with the black girl groups getting their stuff from gospel music in church, rather than crooning pop radio of the 40s. It's funny, because in the 3 sister's harmonies I hear vocal arrangements that seem almost identical to the way J/P/G would split their duties up.
Now that I think of it, maybe it goes like this: Andrews Sisters >> Teddy Bears >> Beatles?