Two nights ago DH and I were woken by an unholy racket that went on and on for several minutes. It sounded like a baby crying at first, but then we realised there were two of them, and it had an odd synchronised rhythm to it, like a baby and a slightly older child sort of half wailing half shouting, in tune together!
We have woken up this morning and can hear it again, but slightly further away this time so it's obviously not coming from a particular house, which rules out the insomniac musical children!