ok, so according to
wiki, Minna no Uta "is a five minute
NHK TV and radio program ... generally used as filler at the end of regular television programs. While many of the episodes are aimed at children, a large percentage are not, so the program enjoys a wide audience."
I guess that explains the 'NHK Kid's Version' of Ringo no Uta that's on my hard drive.
A single+third new song all released within a month seem to point to a real solo comeback