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Just about, by lengthening the syllable: 'crumBALL'.
It wouldn't in ordinary speech, but for song lyrics/poetry I think it's OK.
The one that irks me slightly is in the first verse: most lines end with an 'en' syllable (or similar), but she pronounces 'again' as 'agayn'; if she had pronounced it 'agen' then it would have fitted better I think (although 'agayn' sounds more 'musical', if you know what I mean).