I had a white EE "boss roo" named Tuco until a dog got him last year....that bird would crow from 4 in the morning and continue crowing his stupid head off until sundown.
Losing him wasn't too heartbreaking....he was a pretty roo but he beat up my ducks & was rough on the hens, and I'd been contemplating taking him to the stew pot anyway. During his reign of terror I'd almost NEVER hear a word out of my other two roos (a brown EE and a Japanese bantam). The dog also got the Japanese roo, so now all I have left is the quiet, mellow brown guy (his name is Tabasco). He's a sweet guy, I can handle him if I need to, my ducks now live in peace and my hens have all their feathers even though Tabasco is quite committed to doing his "job" with them regularly LOL.
Now that Tabasco is the only roo left, he crows a bit more, but MUCH MUCH less than Tuco. He'll crow early in the morning (5 am or so) and you'll hear him about once an hour until noon. After that he's mostly quiet unless there's commotion or noise outside- he's kind of a watch-rooster LOL. I also like the sound of a rooster crowing, just not every 15 minutes. Tabasco is the perfect roo (and he's GORGEOUS!)
There are exceptions, like the other night when we had a big bright full moon- I went out at 10:30 PM and he was in the coop crowing! He sometimes crows when he hears a noise so I had to go out and check on them.....all was fine so I think he was crowing at the moon! It was bright enough outside to pass for very early dawn, I suppose. He must have been confused, poor guy!