This is the heart of the piece. Vasilenko was a ethnomusicologist who traveled to Central Asia. The second movement uses modes inspired by Kyrgyz folk music. The trumpet uses a mute (usually a straight mute) to create a nasal, exotic tone. The PDF here will show long, legato lines that require massive breath control.
: Some music publishers specialize in classical music and might have the rights to distribute the concerto. Look for publishers that focus on Russian or Soviet composers. vasilenko trumpet concerto pdf full