Well, technically, he called them the “Singing Dogs,” but anyway. . .
Apparently, he created this perennial favorite back in the mid 1950s, but it took it some time for it to become the classic that we all know and. . . love?
Anyway, can’t find any info on the chap, other than he was a Danish recording engineer. My Google-fu turns up no vital information, and pretty much only stuff from around the time of the recording.