Harmony Assistant (Classic) for Mac

From Myriad:

Harmony Assistant is a complete arranger, score editor, and music composition program. It features chord grids, drum patterns, and accompaniment sequences that are automatically harmonized with your melody. You can also record your own sounds and use them as instruments in your tunes. In addition, Harmony Assistant calculates tablature for any fretted instrument or harmonica and displays the chord diagrams. You can even associate lyrics with a tune and let the music play in karaoke mode.

This new version brings an improved user interface, with a new management of hierarchical lists, a new default icon set and the discontinuous selection of music symbols.