Online Metronome:

Drones for intonation work:

Scores and parts for most orchestral and trumpet pieces published before 1923:

Collection of some of the commonly asked excerpts in orchestral auditions. With clipped recordings and parts:

The Bulletproof Musician - Useful tips for dealing with Music Performance Anxiety

Getzen Instruments:

Edwards Trumpets:

International Trumpet Guild:

National Trumpet Competition:

Musical Chairs - An index of the impending trumpet auditions worldwide:

Online Music Dictionary: