If you hear queens piping, that means that the bees are holding the queens in there cells so that they can super swarm (swarm over and over again). When this is allowed to happen, there is a good chance that the original hive will not survive.
Smoke the hive lightly wait 10 minutes, find at least 10 to 15 queen cages, smoke again lightly, wait 30 seconds and then slowly inspect every frame and carefully open the queen cells. Place the queens in the cages. Go through the entire hive and find every Q cell. Pick the best one and put it back in the hive. If it is a very large hive you can make up a couple of splits. If you disturb the bees too much, they will stop tending to keep the queens in the cells and the queens will all hatch out in mass. If that happens, work fast to catch them all.
Have a small jar of alcohol ready to put any dead queens into. Use the alcohol for swarm traps.
Good luck.
Jim