Play's, Waltz's, Polkas
OK, I think they were going for "Joe Tishmack Plays Waltzes and Polkas". Let's break it down:
- Joe Tishmack: No punctuation failures, but no difficulty: zero points
- Play's: an apostrophe with a verb doesn't work -- "play is"? "play was"? A common apostrophe mistake, since 'plays' is a valid verb; minus ten points.
- Waltz's: As a plural, Waltzs doesn't work: it is waltzes for either a verb or a plural noun. Again, as with above, was their intent "Waltz is", or "Waltz was"? Wifey suggested it was a posessive contraction: Waltz has. Sadly, in context, they're all wrong. Since there's no way to accidentally use an apostrophe this way, minus thirty points.
- ...and Polkas: What, they suddenly checked Strunk & White for apostrophe usage, but couldn't go back and fix the others? They get a plus, because it could be either a noun or a verb in context (...Plays, Waltzes, and Polkas), so I'll give them +10 for getting it right despite their past efforts.