Okay this is a terrible explanation but here goes…
It’s a 2000s song, think Sugababes or Atomic Kitten esque but the opening is just a female voice going mmmm mm m mm mmm m m. All around the same pitch with a few key alterations. I cannot remember ANY lyrics for the life of me.
Essentially it’s a 2000s pop song, female voice with the intro being some mmm’s/her humming.
Probably played at some primary school discos.