Great short video by trumpet wizard Adam Rapa on using half-step bending to get a vocal quality to your playing. You’ll find these exercises in many books, including the Stamp, Advanced Lip Flexibility, Flexus, and other methods. Check out Adam Rapa’s recordings.
Learn about half-step bending and much, much more in Sound the Trumpet: How to Blow Your Own Horn. Want to learn how to play better? Curious about mutes? Transposing parts? Anything else trumpet-related? If you’re just starting out, have a few years in, or are just getting back to the horn, the book will help.
Even better, learn to practice so you can get as good as these players. Just published, The Practice of Practice is a great place to start. Both are available world-wide. See the links to the right if you live outside the United States.