Here are the notes you need to play blues scales for trumpet. Some ideas about how to use them follow the scale sheet:
B Flat Trumpet Blues Scales
These scales are transposed for Bb Trumpet, or any other Bb instrument with similar range. The first one is your C blues scale, but it’s referred to as a Concert Bb blues scale. This concert pitch reference is so that instruments with various different transpositions can all get along.
The rhythms here are simple, but you can change them to suit your needs. Get creative. Do the same with articulations.
More Scales for Trumpet Players
If you’re really into playing scales on the Trumpet and find these too simple, you’ve memorized them, the 12 major scales and the chromatic scale then perhaps you might like to look here. WARNING – This link is not for beginners.