This recording is over 7 minutes long and contains 12 blues choruses. With these backing blues tracks, you can learn how to play the trumpet blues. The play along blues tracks for trumpet will help you develop a feel the blues changes over time.  The chords for this trumpet blues track are:
In the 12 Bar Blues, the 1 Chord is ‘D Chord’ - Notes D, F#, A
In the 12 Bar Blues, the 4 Chord is ‘G Chord’ - Notes G, B, D
In the 12 Bar Blues, the 5 Chord is ‘A Chord’ - Notes A, C#, E
Some MAGIC notes to play around with are B, D, E