I would say the same as tradesmen working noisy equipment. In the uk that is 8am-6pm weekdays. 8am-1pm on a weekend. This is your job so it would follow that it takes the same hours as that.
But what about if you're a professional tradesperson and you're a trombone enthusiast on the side?
But what about if you're a professional tradesperson and you're a trombone enthusiast on the side?
Sad trombone noisesNo trombone noisesPractice deep in the woods late at night. If nothing else you’ll start some really interesting urban legends.