The B looks an awful lot to me like an est-set -- a double S. (I probably misspelled the name; it's been a long time since German class.) Alternatively, it's a capital B, and I have no idea what that means in the context here.
Pretty sure it can't be an eszett, since each note has to be one letter in the range A-H (which is also why the ones that look like 'fe' or 'ce' have to be F# and C#). Capital B would mean a low B-flat. But there's an even more B-looking letter earlier in the piece...
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Or am I looking in the wrong place?
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And fraktur makes my head hurt.
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(*grrr* Fraktur.)