i'm not sure that works; if you take the date of the first recorded alien abductions, subtract the date of the first radioplay of a bill haley single - presumably, "rock around the clock" - and divide by two, the distance light travels in this time = the greatest distance away from us the interstellar abducting aliens can've travelled from: and it just isn't long enough, and so far enough, even for proxima centauri...
i think you'd have to look back to the songs & tunes being broadcast in the mid-twenties & thirties, to find a radiophonic provocation for alien abductions...
the 1890s ssaw a rash of flying cigar/flying rugby football sightings? hmmm; did their alien aeronauts subject their impromptu passengers to the kinds of excessively personal indignities that so many fifties & sixties' silver saucerers seem to've?
and the pied piper of hameln wasn't exactly noted for returning his abductees now, was he? nor were the elven-kind - leastways, not without compulsion; and not willingly, even then.
They didn't actually abduct people. But polite, well-mannered inventors (usually American, but not always -- these sightings were in the USA) would land their craft, which was usually some sort of Jules Verne type flapping dirigible sort of thing; they would explain how their craft worked, in terms which don't make much sense by modern aeronautical standards, and often included electricity and unlikely turns of speed; and sometimes they would take witnesses for a short ride. The "airships" often had lights on them, were always flying at night, and the inventor usually explained he was doing secret tests before announcing his amazing invention to the public. Somehow the announcement was never made.
Make of this what you will! I put it in the Fortean category myself.
I can't recall where I read it, I think one of the astronomy and/or anti-creationist web sites, but they point out that "alien abductions" only started once it had appeared in a film.
In similar news, the USA anti-terrorist plans were analysed on one of the computer security lists I'm on. Turns out their attack possibilities all came from Hollywood Films. Sad really.... they almost deserve it.