You can download Ernie 1.0 for Mac from our software library for free. This app's bundle is identified as net.kos.geophysics.Ernie. This free software for Mac OS X is an intellectual property of Eduard K. Chew. You can run this free application on Mac OS X 10.5 or later. Ernie1.0b8.zip is the most frequent filename for this app's installer. The most popular version among Ernie for Mac users is 1.0. The program is included in Audio & Video Tools.
From the developer:
Ernie is an application for composing musical scores using the popular ABC notation. You have to type up a tune in ABC, save your file, and then press any of the 3 displayed buttons, PDF, MIDI, and Transpose. The PDF button generates a PDF sheet music file, the MIDI button generates a MIDI file, while the Transpose button lets you raise or lower the key by up to 12 semitones (a full octave).
You may want to check out more software for Mac, such as Warblade, which might be similar to Ernie.