CAUTION: not a cuckoo clock

works exactly as described, "hourly chime", but its appearance in a "cuckoo clock" search is misleading, since it cuckoos once at 1 oclock, then, absurdly, only once at 2 oclock, only once at 3 oclock and so forth. Correcting this should be an easy and anticipated update.

HKluzik about Hourly Chime in Background