On average, my warmup consists of light mouthpiece buzzing until I feel like I can buzz a really good Bb in the staff (bass clef) on the mouthpiece. Then I play some long tones, once again starting on a Bb in the staff going down chromatically. That's then followed by a few lip slurs gradually going up in range and flexibility. Then I like to do a few tonging things to make sure that's working. By then, I have a pretty good idea if I'm where I need to be. A lot of the time, however, I get by with just a few long tones, some lip slurs and I'm good to go. I can usually tell what I need to do after playing or buzzing the first few notes of the morning. On occasion, I just play some long tones and a tonging exercise and I feel ready to play for the day. It really just depends. Being up in the north, the winter weather certainly plays a role in what my muscles are feeling each day. But if I'm in shape and playing regularly, I usually do a pretty small warm up. The warmup I listed above is kind of a worse case scenario if my chops are not feeling up to standard. We're literally talking 10 minutes at the max. I don't even do much playing in the upper register. I figure I only have a certain amount high notes in a day, why waste them in my warm up? I can tell if my high notes are going to speak during my normal warm up stuff.
For me and I'm sure most other professionals, it's all about getting in a comfort zone. You're just making sure everything is in working condition for whatever it is you're playing that day. It's all about reassurance. I definitely know some guys that warm up a lot more than me and it's really just a personal preference. It just takes them a little bit longer to get to that reassurance point. Or, they're just a routine centric person as a lot of musicians tend to be. They have to play the exact same warm up they'e played for the last 30 years to be ready to go mentally.
My advice: figure out a warmup routine that makes you feel comfortable and ready to go whether that's 10 minutes or 45 minutes. Utilizing those warm up staples of lip slurs, long tones, etc. is a good start but find something that triggers your brain into thinking you're ready to go, whatever that is. Through experience, you'll be able to tell when you've reached that threshold and when you need to spend some more time on an aspect of your playing in the warmup routine. One thing to stay away from is warming up too much. Playing your best notes of the day in your warm up doesn't make much sense to me. That's pretty much it on my philosophy. Keep it simple and don't think too much about it.
Have fun and don't be afraid to try something new! Leave your comments about your warmup routine below.