The Star Spangled Banner
Arranged for Low Brass Choir by Dr. Rod Harkins
Based on settings for band by Dr. George Naff and Marvin Branson
You are listening to a studio recording by professional French Horn players Paul Klintworth and Martin Rhees. Instead of finding two trombonists, a euphonium player, and a tuba player, they decided to play all the parts (including tuba) on French Horn. Very cool!