A long time ago, another user, Guitar Stu, posted a bunch of songs in multi part with bass format. We lost those during a server crash several years ago, when Singular failed to back up content. But…it seems I kept a copy, or at least I think it’s a copy.
Download and unzip. You should have 3 .pbf files (not PDF). These are recognized as a “folder” by Beat Buddy. To import them into your pedal, one at a time, from the upper BB Manager Menu select File>Import>Folder. The folder will appear and you can see the content.