Free piano sheet music software for mac

Tension Sheet is a little program that was inspired by the (popular?) SF series Red Dwarf. For those familiar with the show, this is the Tension Sheet as invented by Thicky, but in OS X form.
Licensed under GNU GPL, source code included.
Enhancements:
- Key mashing and window resizing work better.

The Piano Theory Widget created to allow you to play piano using a standard qwerty keyboard as the interface! It includes interactive chord and scale charts, which makes it much easier to learn piano :)

Basically, it brings a basic reference for piano theory right to your desktop. Sound interesting?

PS: Special thanks to Jared R. White for allowing me to use his excellent MIDI plugin :) This is great, because it allows you to actually hear the piano.

Blues Music is your chance to play the electric blues guitar along to the drums and bass. Simply click on the guitar riff buttons to trigger the guitar samples and release those blues!
Enhancements:
- Universal Binary.

You might not have heard of Pandora, a personalized streaming music service. The cool thing about Pandora, besides the fact that its free, is that its music recommendations are based on actual musical analysis (e.g. "vocal harmony, mild rhythmic syncopation, acoustic rhythm piano, major key tonality"), not just artist and genre. Pandora comes from the Music Genome Project.
Well, I made a Dashboard widget for Pandora.
Caveats (not my fault):
1) Dashboard in Tiger doesnt pass events through to Flash applets very reliably (its a known issue), so its can be hard to click on things (try clicking in rapid succession). But it plays music fine. Its probably easier to set up your account and music preferences in your web browser first, and then just use the widget for listening to music (think: "It shuffles music for you").
2) Pandora takes a while to load (like 10 seconds).
Enhancements:
- Minor update for Pandora system changes.

Scott's Music Game 1.0 is designed to be an interesting and attractive 80's music trivia game which includes sounds!