Grand Staff AU 2.2 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This software for Mac OS X is an intellectual property of Laidman & Katsura.
The most popular versions of the tool are 2.1 and 2.0. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The program belongs to Audio & Video Tools. GrandStaffAU21.dmg or GrandStaffAU.dmg are the common file names to indicate the Grand Staff AU installer.
From the developer:
Grand Staff AU is an audio unit plug-in tuner for pianists, singers, and budding musicans. Shows single note on a Grand Staff. Hands-free operation, listens while you tune.
Requires an application that supports "Cocoa" Audio Unit plug-ins such as GarageBand, Logic Pro, Logic Express.
If you don't have an application that supports "Cocoa" Audio Units plug-ins, you can try the application version of our tuners. Visit our Web site at www.rustykat.
You may want to check out more software for Mac, such as Le Grand Robert, UVI Grand Piano or Lucida Grande Yosemite, which might be related to Grand Staff AU.