The Ultimate Trumpet Wedding Book includes all 5 Major Pieces - each in 4 different keys:

Trumpet Voluntary - Purcell/Clarke for Trumpet and Piano - Keyboard - Organ in Ab
Trumpet Voluntary - Purcell/Clarke for Trumpet and Piano - Keyboard - Organ in Bb
Trumpet Voluntary - Purcell/Clarke for Trumpet and Piano - Keyboard - Organ in C
Trumpet Voluntary - Purcell/Clarke for Trumpet and Piano - Keyboard - Organ in D


Trumpet Tune - Purcell/Clarke for Trumpet and Piano - Keyboard - Organ in Bb
Trumpet Tune - Purcell/Clarke for Trumpet and Piano - Keyboard - Organ in C
Trumpet Tune - Purcell/Clarke for Trumpet and Piano - Keyboard - Organ in F
Trumpet Tune - Purcell/Clarke for Trumpet and Piano - Keyboard - Organ in G


Wedding March - Mendelssohn for Trumpet and Piano - Keyboard - Organ in C
Wedding March - Mendelssohn for Trumpet and Piano - Keyboard - Organ in D
Wedding March - Mendelssohn for Trumpet and Piano - Keyboard - Organ in F
Wedding March - Mendelssohn for Trumpet and Piano - Keyboard - Organ in G


Bridal Chorus - Wagner for Trumpet and Piano - Keyboard - Organ in Bb
Bridal Chorus - Wagner for Trumpet and Piano - Keyboard - Organ in C
Bridal Chorus - Wagner for Trumpet and Piano - Keyboard - Organ in Eb
Bridal Chorus - Wagner for Trumpet and Piano - Keyboard - Organ in G


Rondeau Theme - Mouret for Trumpet and Piano - Keyboard - Organ in A
Rondeau Theme - Mouret for Trumpet and Piano - Keyboard - Organ in Bb
Rondeau Theme - Mouret for Trumpet and Piano - Keyboard - Organ in C
Rondeau Theme - Mouret for Trumpet and Piano - Keyboard - Organ in D


Each Piece is written in 4 keys with piano organ keyboard part included. This allows YOU to choose which version YOU feel comfortable playing. They all sound good just a manner of different keys and different range!

Here is a free download for you to try - ALL four keys of the Mendellsohn's Wedding March.


I wanted to add a little historical perspective taken from wikipedia:
Trumpet Voluntary is the name given to some English keyboard pieces from the Baroque era. A trumpet voluntary is most commonly played on the organ, using the trumpet stop. Hence the name. Trumpet voluntaries usually consist of a slow introduction followed by a faster section with the right hand playing fanfare-like figures over a simple accompaniment in the left hand. The most celebrated trumpet voluntary is a composition by Jeremiah Clarke. It is properly a rondo for keyboard and was not originally called a trumpet voluntary but rather the Prince of Denmark's March. It is very popular as wedding music and was played at the 1981 wedding of Charles, Prince of Wales, and Lady Diana Spencer. This piece, particularly in a well-known arrangement for trumpet, string orchestra and organ by Sir Henry Wood, was incorrectly attributed for years to Henry Purcell. It is now known to have been the work of Clarke. There have been many different arrangements of it, the most famous and difficult being the one with a trill on the second note.