Mus2 is a fascinating piece of software, and it’s one I have strongly considered buying from time to time. It’s not the most feature-rich application I’ve looked at, but it functions within its limitations very well. It’s specifically targeting those who want to create microtonal music (think Turkish maqam and Indonesian gamelan music), and it has several unique features targeted directly at that task.

General Usability

Of the music notation software I’ve tried for the Mac, Mus2 is easily the most eye-catching. I spend my days working in graphic design, so an application’s icon and user interface can instantly bias my opinion of the overall quality of the software. I have to admit that most notation software elicits an initial negative reaction based on looks alone.

I even like how it handles highlighting notes.
I even like how it handles highlighting notes.

Mus2 is very uncluttered, the developer accomplishes this with context specific palettes that appear and disappear as needed. If you select Note Input in the sidebar, a specific set of supporting palettes appear. If you then select Dynamic, the note palettes disappear and new one take there place. This also affect cursor interaction with the score. It was odd at first because so many music notation applications take a kitchen-sink approach to their interfaces, but I found it works very well in most cases.

Palettes change depending on the selected tool.
Palettes change depending on the selected tool.

There were times when the palette system seemed a bit cumbersome. There are certain elements you might expect to be able to edit directly but cannot touch without having the proper tool selected first. The title is a good example of this. At a glance, it looks like you should be able to just double-click on the title to change it, but that doesn’t work. Clicking the Score Info icon doesn’t do anything. Instead you have to select the Text tool from the palette and then select the Floating Text tool in the sub-palette that appears. Then you can edit the title.

Once you get used to how Mus2 thinks, clicking through the required palettes becomes second nature. It has a very intentional workflow. If you like keyboard shortcuts, you can navigate through the palettes fairly quickly. It isn’t quite as easy as Sibelius’s number pad input, but it works pretty well, and I learned the keyboard shortcuts in Mus2 faster than some of the other programs I’ve tried.

Unique Features

Mus2 is built around microtonal and notation and supports free time note input, so it should come as no surprise that you’ll find some unique aspects about working in the application. One of the most obvious things is that it doesn’t constrain the number of notes you can place in a measure based on the assigned time signature. The measure will continue to grow to accommodate as many notes as you’d like.

Mus 2 does not constrain how many notes go in a measure.
Mus 2 does not constrain how many notes go in a measure.

The other big features revolve around microtonal composing. You will see a number of different accidentals that you don’t usually see in Western music. You can import your own vector files to create custom accidentals. You can obsessively tweak the tuning of every line on the staff as absolute pitches or relative pitches. Mus2 even supports microtonal MIDI recording through its own built-in MIDI interface.

Another nice touch to help you get started with Eastern and microtonal music is that Mus2 provides access to the SymbTr collection, which comprises more than 2000 Turkish maqam music scores. That alone is a great resource for learning about a style of music that may be unfamiliar to many of my readers. I spent hours just loading one file after another and listening through while watching the score.


Mus2 only features a limited number of playback instruments, and most of these are unique to Eastern music. You won’t find saxophone or cello here, but you will find instruments like Qanun and Bendir. Violin and piano are the only Western instruments available, which might seem like limitation if you are trying to use Mus2 for compositions and arrangements outside its scope.

The selection of instruments sounded very realistic, and they did a nice job playing back the music accurately.

Picking Nits

As much as Mus2 has going for it, the application does have a few quirks:

  • The application does not have a fullscreen mode on OS X.
  • Pinch-to-zoom does not work.
  • Scrolling in general seems very rough.
  • Menus occasionally begin duplicating commands until the menu goes off the screen.
  • There is no OS X Quick Look support.
  • Interacting with notes you’ve already input can be problematic. I can’t seem to find a way to adjust the pitch of a note after placing it on the staff.
  • Mus2 has almost no predefined key signatures. You will have to define any key signature you want to use in the Tuning dialog.


Mus2 has a bit of a learning curve if you are used to applications like Sibelius or Finale that put their features in numerous toolbars and ribbons. It may not be the best choice for creating your next symphony, but its features are essential if you’re wanting to work with microtonal music. It’s best suited for writing music for a solo or for a small ensemble.

At $60, it’s abilities to record and accurately play back microtonal pitches can easily make it worth the price of entry. Mus2 is not for everybody, but if its features sound compelling to you, it’s definitely an application worthy of your consideration.

Mus2 Product Page – Go here to learn more about Mus2, download a trial version, or purchase a copy.




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