Penn Singers

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Across
  1. 3. Broadway's longest-running show.
  2. 4. Gilbert and ______.
  3. 6. Pirates of _____.
Down
  1. 1. ____________
  2. 2. A word used instead of "light" to indicate the same type of work. _____ Opera.
  3. 5. The old name for Penn Singers. Penn _____.