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Circle of Fifths

The essential music
theory tool.

 Circle of 5ths screenshots
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Sound Studio

Audio recording, editing,
and digital effects.
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Run 5k

8-week interval training coach for your first 5k.
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Run 10k

13-week interval training coach for your first 10k.
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RunQuest 21K

13-week GPS-based training coach for your first half marathon.
Felt Tip Inc. develops apps for the iPhone, iPod touch, iPad, and Mac.
We are Lucius Kwok and Agnes Chan. 		Blog Mailing list Contact us
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