This comes from the Longhorn Band's own website:
The Eyes of Texas" is the official Alma Mater of the University of Texas. It was written in 1903 by John Sinclair, in response to a request that a song be written for the Cowboy Minstrel Show. Since he was given only a few hours in which to come up with a tune, Mr. Sinclair hit upon the idea of using a famous saying of Colonel Prather, who was the President of the University. The Colonel always told his audiences to remember that "the eyes of Texas are upon you."
This expression was fitted to the tune of "I've Been working on the Railroad."
GOODBYE MY CONEY ISLAND BABY
(Words and Music by Les Applegate)
© 1948, Mills Music, Inc.
The Aggie War Hymn was written by J.V. ‘Pinky’ Wilson, former student, while standing guard on the Rhine with the AEF, after World War I.
WWI was from 1917-1919.
What I am showing you is that by the timeline I can dig up from internet music composition databases the Aggie War Hymn was written WAY before the barbershop standrd was written, and the t.u. fight song was PURPOSEFULLY written to the tune of "I've Been Workin' On The Railroad".
So, enough of these falsehoods about our beloved AWH being a copy of something else.