Best Trombone Brands
+10 Best Trombone Brands Ideas . The jtb720vr trombone is a model made in the key of c. It is a b flat. Best Trombone [2020] Top Trombones Brands [Reviews] from www.truetop5review.com The jtb720vr trombone is a model made in the key of c. This is a great tenor slide trombone with a gold lacquer finish. Its other slide comes in yellow brass and a nickel silver inner slide.