Try these guides if you get a "Download unsuccessful" error when downloading:

• http://market.android.com/support/bin/answer.py?answer=1067233
• http://www.technipages.com/android-market-download-unsuccessful-error-fix.html

Sometimes just canceling and retrying over and over seems to help: http://www.google.com/support/forum/p/Android+Market/thread?tid=32d8a7605362208e&hl=en

Also, check your inbox for messages from Google Checkout concerning your order. If the order was rejected the download will fail. If so, log in to your Checkout account and reverify your credit card information.

If the download succeeds but the installation fails:

• Unmount your SD-card by going to: Settings » SD-card & storage » Unmount SD-card
• Try to install Chordbot again (this will force your phone to install Chordbot to its internal memory)
• Remount the SD-card from the same menu as above (do this before starting Chordbot for the first time)

After the app has installed successfully you can try to move it to the SD-card manually from Settings » Applications » Manage applications.

Yes, press and hold the chord button for half a second (until it turns a darker shade).
In playback mode this will cause the song to seek to the selected chord.

Planned major features in order of appearence: