Keith Brion has been played on NTS shows including Geologist Presents: The O'Brien System, with October Mountain, Op. 136 For Percussion Sextet (1942/1951) first played on 12 October 2023.

Keith Brion is an American classical conductor and band leader.

He studied music education at West Chester State University and piccolo with John Krell, then taught in New Jersey schools while studying for a master's degree at Rutgers University. He played piccolo with the New Jersey Symphony, and founded the North Jersey Wind Symphony, of which he was music director. He was later a band educator and music supervisor in the New Jersey public schools, and Director of Bands of Yale University, where he led the Yale Band in performances at venues such as the Kennedy Center and Carnegie Hall.

In 1979, Brion founded the New Sousa Band, of which he is the music director and conductor. This band is dedicated to playing the music of John Philip Sousa and recreating the performance style of Sousa's original band; Brion also appears in the persona of Sousa, dressed as Sousa did. Brion has performed with a number of orchestras and bands, including the Stockholm Symphonic Wind Orchestra, New York City's Goldman Band, The California Wind Orchestra, and the Allentown Band. He has also performed with military bands, such as the U.S. Marine Band, Army Field Band, Army Band, Coast Guard Band and the U.S. Army Band of Europe in Heidelberg, Germany. Brion has also presented "Sousa revival concerts" with leading American orchestras, such as the Boston Pops, the Philadelphia Orchestra and the St. Louis, Dallas, Milwaukee symphonies.

Brion has published many editions of band music, by composers such as Charles Ives, Percy Grainger, John Philip Sousa and others. He is currently recording the complete music of Sousa for Naxos Records with London's Royal Artillery Band. This series is projected to cover 16 volumes. He has also recorded music of Sousa on the Delos label.