A trombone warmup lesson with Christopher Bill Nov 9, 2022 9:37:15 PM by Christopher Bill Looking for a good trombone warmup? This one has been viewed over 82K times on YouTube, and it is no surprise that the origin of this warmup comes from Denis Wick artist, Christopher Bill. » Read more Filed Under: Denis Wick Mutes, Mouthpieces & Brass Accessories Blog Tagged With: Low Brass, Educator Resources