Assertion: barbershop quartet | /r/CapableOf | do in the history of the event
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text: In addition to becoming 1996–97 Far Western District Champions, on May 9, 1998, Metropolis earned the Harmony Sweepstakes' Grand National A Cappella Championship - the first barbershop quartet to do so in the history of the event - and in 1999, the Contemporary A Cappella Recording Awards (or CARAs) nominated Metropolis' CD "Aural Hygiene" for "Best Barbershop Recording" and "Best Barbershop Song".