The first release of Mobile SongBook had quite a short search window for devices. It now appears that for many users this was too short. The problem was identified quickly and an update was submitted to Apple on the 29th October. The problem is now that Apple have not released this update, and time is moving on.
This is very frustrating. I have e-mailed Apple but have no response yet.
For your information here is a screenshot of the status of SongBook on Apples iTunes upload site:

I actually uploaded 1.0.1 the day after 1.0, but perhaps the timezone differences made that the same day in USA.
I’ll post an update here as soon as I hear back from Apple. For now it may be best to hold off from downloading SongBook until the new release is out.
Update: I received a reply from Apple:
Hello Jason,
Thank you for contacting the Apple Developer Connection regarding the iPhone Developer Program.
Please know that we will review your App as quickly as possible.
At this time it is not possible for us to give you a timeline.
We appreciate your patience. Please do not hesitate to contact us again should you have any further problems or queries.
Best regards,
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