Perform this piece on a trumpet if you can play a high G comfortably. The original piece is most often performed in F# minor. However, this is often arranged in F minor for marching band.
Attempt to learn this song by ear. Any trumpet player attempting this should either have a recording of the song or be performing with a band. This method would require a system to play back music in the practice area. It should be noted that the original song is in an uncomfortable key for trumpets.
Use sheet music. This song can be downloaded from several sources.
Take the following steps to learn any piece of music: Warm-up properly before beginning; practice at a slower tempo with a metronome if possible; divide the piece into sections to practice the tough spots; and don't simply run through the pieceas this can be tiring and unproductive. A player should alternate periods of rest with playing. It is often productive to record your effort--by playing back the music you can often fix troublesome spots.
Note any special requirements for this piece. For example, the beginning of the piece requires fast valve movement and a more percussive attack--the B section of the melody is much more flowing. You must be fit to hit the higher notes. Also, pay special attention to the rests--by ending notes at the correct time a definite pulse can be established.