It´s any kind of „child“ music- maybe Christmas song. Recorded in 1969-1971.Could you be kind enough to listen to clip and try to figure out any words(lyrics) you can hear? I can´t decode anything.
I recognise it - but mostly by the tune and the chorus (which has the only vaguely distinguishable lyrics!). It sounds as though it is being sung by someone Japanese/Chinese without the ability to make all English sounds, so it's not very clear.
It's a Christmas carol sung by children - quite common in schools here.