You can take a photograph of a song or lyric sheet (or anything) such as the beer label in the example here) and display this in OpenSongApp. Effectively this creates an image file and saves it to your Songs folder.
You will need to accept certain permissions for OpenSongApp to access your camera for this to work.
Once the photograph has been taken, you can edit the song and attempt to extract text using OCR, or use it as it is without the ability to transpose, etc.
If you are running Android Marshmallow (23) or later and have Google Play Services installed, the app will use Google's Document Scanner API. This allows the automatic detection of a page, fixing of perspective skew and other automatic fixes that improve the clarity of the image. This also allows you to photograph multiple pages into a single document.
The document scanner feature will significantly improve the chances of the OCR (optical character recognition) feature correctly extracting your song information. Documents will be saved as PDF files which improve clarity and file size.
Older devices, or those running versions of Android without Google Play Services, will default back the standard camera and songs will be saved as image files.
Built in or connected camera
Google Play Services (for Document Scanner feature)
Android Marshmallow or later (for Document Scanner feature)
CAMERA