Grand Piano HQ
High-quality sound
Create sheet music online
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.
Intuitive music writing
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 free
Complete music notation suite
From 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.
Collaboration in real time
Invite collaborators to compose in real time. Multiple users can write and edit the same score simultaneously across devices.
Compose with high-quality instruments
Drums
High-quality sound
Trumpet
High-quality sound
Violin HQ
High-quality sound
Guitar
High-quality sound
Your music scores, always in sync
Start composing on your laptop, make edits on your phone, and finish on your tablet—Flat keeps everything perfectly synchronised across web, iOS, and Android. No uploads, no emails.
Explore music
Browse over 300K original scores and arrangements by instrument and popularity.
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Join a 6M+ community
Grow and create with others worldwide—find collaborators or participate in our challenge.
Discover our community
+0M
Users compose with Flat
+0M
Scores are created in Flat
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Collaborations happen in Flat
Flat Power: to take your music further
See all the plansUnlimited scores
Don't stop your creative flow, create scores without limits.
Customisable layouts, styles, and templates
Manage margins and spacing, stave size and spacing, measure numbers and add coloured note heads.
180+ instruments including HQ studio instruments
Create the specific sound you want to bring your ideas to life! With over 90 HQ instruments and custom instruments, you are equipped to create any sound you imagine. And, our list of instruments is constantly growing!
Compose offline
Keep composing offline. We synchronise all your changes when you are back online.
Advanced Playback
Get precise control over your music playback with adjustable part volumes and customisable reverb settings.
YouTube, Soundcloud, and MP3 audio uploads
Upload tracks from different sources to provide the ultimate listening experience.
Why musicians choose Flat
I just want to say how grateful I am for the entire team at Flat! You are all so amazing. With Flat, I have taken music from being a hobby to actually earning commissions and writing for professional ensembles and recordings. Wow!
I absolutely love using the programme! I am constantly surprised at how many features are here and the professional look of the final product.
Since I've joined Flat, I've been able to grow as a musician and learn things I may not ever have learned in the music world. Again, I wanted to thank you for the amazing journey you have given me, through the monthly challenges, Flat Blog Posts, and a wonderful community that I take a responsibility to protect along with other great users
Thank you so much for developing this tool. I found it super intuitive and easy to use.
I just quickly signed up to complete a quick transcription for a friend and I was blown away by the intuitiveness of your programme and that it was free!
I found Flat amazing to use! It's really good, I'll definitely be using it more from now on!
Please keep up with your platform—it is a wonderful tool and has propelled our son into writing his own music in a way that no other platform or app has been able to.
Let me thank you for producing this tool! I have found it to work intuitively well, being able to enter some arrangements on my first attempts with the app on iPhone.
FAQs
1. What is Flat music notation software?
2. Can I create sheet music online without installing software?
3. How do I collaborate with others on a music score in Flat?
3. Is Flat free to use, and what are the paid features?
5. What instruments does Flat support?
Create your music scores online
With the most intuitive music notation software around
