Using That instead of Who or Whom

Away from all things computer for a couple more days, so keeping things going with scheduled blogs on the language we use as writers. I hope you'll forgive me if I don't reply to any comments until I return from my well-earned rest.
Using That instead of Who or Whom Image via Wikipedia Who or whom; always used when referring to people, especially as individuals. 'That; used when referring to a class, species, or type.  'She's the sort of singer that you want to listen to late at night.'