Writing for trumpet means dealing with transposition: the part on the page sits a major second above what the audience hears. Get the transposition wrong and the whole arrangement is in the wrong key. Flat runs in your browser and handles the transposition automatically. This article covers how to start a trumpet score in Flat, the features that matter when notating trumpet parts, and how to share what you've made.
Writing your first trumpet score in Flat
Open Flat, sign in, and start a new score. Pick trumpet from the instrument list and Flat sets up a treble-clef staff already configured as a Bb trumpet — the part is written a major second above concert pitch and the playback adjusts so what you hear matches what a trumpet would actually play. You don't transpose anything by hand. The toolbar gives you articulations, slurs, dynamics, mutes, and ornaments. For a fuller walkthrough, the step-by-step tutorial covers everything.
Trumpet-specific features that matter
A trumpet part has a specific vocabulary of articulations, mutes, and dynamics that shape how it sounds. Here's what Flat gives you for the markings trumpet writers actually need:
- Automatic Bb transposition. Trumpet in Bb is a transposing instrument: the player reads a written C and produces a Bb. Flat handles this for you — write the part on the staff, the playback sounds at concert pitch, and you can toggle between transposed and concert pitch views.
💡 Transposing instruments in Flat. - Articulations: staccato, marcato, accent. The vocabulary that defines trumpet phrasing, from fanfare-style marcato to legato tonguing. All in the articulation toolbar with one-key shortcuts.
💡 Articulations in Flat. - Dynamics with shaped playback. Trumpet dynamics span an enormous range from ppp to fff. Flat's dynamics playback actually shapes the sample volume so you can hear whether your written dynamics work before sending the part.
💡 Dynamics shortcuts. - Doits, falls, plops, and scoops. The brass-specific articulations that show up in jazz and big-band writing. Flat has all four in the articulation toolbar.
💡 Full articulations list. - Slurs and ties. Slurs for connected phrasing, ties to extend a note across barlines. Both render cleanly and are essential for a readable trumpet part.
💡 Slurs and ties. - Breath marks. Trumpet players need breaths marked just as much as woodwind players. Flat puts breath marks in the articulation toolbar alongside caesuras.
💡 Breath marks.
Sharing and exporting your trumpet score
When the score is ready, click Share for a public link, invite collaborators by email for real-time editing, or open the export menu to download as PDF, MIDI, or MusicXML. PDF is what trumpet players print or read from a tablet on a stand. MIDI moves the part into a DAW for a film score or production session. MusicXML lets another tool open the file with everything intact. If you're writing for brass quintet or big band, you can write all parts in one score and export each as its own PDF with the right transposition applied.
Find inspiration in the Flat community
Flat hosts more than 100,000 user-published scores. Browse the community scores to see how others have written for trumpet: phrasing, articulation patterns, range choices, jazz vs. classical idioms. You can clone any public score into your own account and edit from there.
Why Flat for trumpet
Most browser notation tools handle trumpet as a single-staff instrument and leave the transposition to you. Flat does it automatically: the written part is in Bb, the playback is at concert pitch, and you can toggle between views to proofread. The studio-recorded trumpet sample plays back jazz articulations and brass dynamics realistically. Real-time collaboration means an arranger and a player can be in the same score live.
Ready to write your first trumpet piece? Try Flat for free!
FAQ
How do I write trumpet sheet music online for free? Sign up for a free Flat account, create a new score, choose trumpet, and start entering notes. The free tier covers personal use, PDF export, and public sharing, with no install or credit card required.
Does Flat handle Bb trumpet transposition automatically? Yes. Picking trumpet sets up the part as a Bb transposing instrument: the written page sits a major second above concert pitch, and the playback adjusts so you hear what the audience hears. You can toggle between transposed and concert pitch views to proofread.
Can I add jazz articulations like doits and falls? Yes. The articulation toolbar includes doits, falls, plops, and scoops — the brass-specific markings used in jazz and big-band writing.
Can I export my trumpet part to PDF? Yes. Open the score, click Export, and choose PDF. The export uses the same engraving as the editor view and works on the free plan. MIDI and MusicXML are also available.
Can I write for brass ensemble and export individual parts? Yes. Add all instruments to one score, write each line, and export individual parts as separate PDFs with the right transposition applied per instrument. Real-time collaboration lets the section work on the same score together.