
Grand Piano HQ
High quality sound
Flat is the music notation software that combines professional tools with a beautifully simple interface—so you can compose, collaborate, and publish polished sheet music online with speed and ease.
With a clean interface, efficient note input, and intelligent notation tools that adapt to your writing, you can focus entirely on your music.
Try it for freeFrom chamber scores to solo tabs, Flat delivers all the tools needed to compose, edit, and publish with precision. Every essential feature is here—refined for speed and control.
Invite collaborators to compose in real time. Multiple users can write and edit the same score simultaneously across devices.
High quality sound
High quality sound
High quality sound
High quality sound
High quality sound
Grow and create with others worldwide—find collaborators or participate in our challenge.
Discover our communityUsers compose with Flat
Scores are created in Flat
Collaborations happen in Flat
Don't stop your creative flows, create scores without limits.
Manage margins and spacing, stave size and spacing, measure numbers and add colored note heads.
Create a specific sound you want to bring your ideas to life! With +90 HQ instruments and custom instruments you are equipped to create any sound you imagine. And, our list of instruments is constantly growing!
Keep composing offline. We sync all your changes when you are back online.
Get precise control over your music playback with adjustable part volumes and customizable reverb settings.
Upload tracks from different sources to provide the ultimate listening experience.