Number 19 had to be Texas A&M ballot stuffing again, just like they did 3 years ago.
Number 15 was a very pleasant surprise.

#20 Williams - Raiders March (from "Raiders of the Lost Ark" soundtrack)
#19 Wilson - Texas Aggie War Hymn
#18 Wagner - Under the Double Eagle (Unter dem Doppel Adler)
#17 Walton - Crown Imperial (Coronation March)
#16 Clarke - Trumpet Voluntary (aka Prince of Denmark's March)
#15 Anon./Trad. - Scotland the Brave
#14 Sousa - Liberty Bell March
#13 Tchaikovsky - Marche Slave
#12 Seitz - March Grandioso
#11 Willson - Seventy-Six Trombones (from "The Music Man" soundtrack)
#10 Rimsky-Korsakov - Procession of the Nobles (from "Mlada")
#09 Bizet - March of the Toreadors (from "Carmen")
#08 Verdi - Grand March (from Act 2 of "Aida")
#07 Strauss - Radetsky March (Opus 288)
#06 Sousa - Semper Fidelis March
#05 Elgar - Pomp & Circumstance March #1 in D Op 39/1
#04 Alford - Colonel Bogey March
#03 Sousa - Washington Post March
#02 Williams - The Imperial March (from "The Empire Strikes Back" soundtrack)

... and for the 6th straight year (no surprise) ...

#01 Sousa - Stars and Stripes Forever