Aspiring singers of wide-ranging abilities perform on NBC’s “The Voice,” a “reality” show that subjects them to the opinions both of judges in the studio and the mass audience in homes across the land.

But during a recent live telecast of the program, viewers heard a voice saying, not singing, “I hate this country.”

That sweeping contempt wasn’t expressed by one of the contestants voted off of the show.

It was issued by one of the judges — Adam Levine — in an outburst of frustration at the public’s decisive verdict, which was rendered via the Internet, phone calls, texts and iTunes purchases.

A predictable storm of Twitter wrath ensued against Mr. Levine, the lead singer of Maroon 5. He tried to spin his odious remark later that night, also through Twitter, by citing dictionary definitions for “joke,” “humorless,” “misunderstand” and “lighthearted.”

By the next day, however, Mr. Levine realized that few folks were amused — and that even fewer were buying his “joke” defense. He then issued this statement:

“I obviously love my country very much and my comments last night were made purely out of frustration. Being a part of ‘The Voice,’ I am passionately invested in my team and want to see my artists succeed.”

And: “My comments were made based on my personal dissatisfaction with the results.”

So learn from Mr. Levine’s losing experience. Don’t let your “personal dissatisfaction” with voters’ judgments trigger rash resentments.

That lesson should be heeded by conservatives still appalled at American voters’ decision last November to keep Barack Obama in the White House — and by liberals still deploring S.C. 1st Congressional District voters’ decision last month to send Mark Sanford back to Washington.

Hey, you win some, you lose some — on “The Voice” and at the ballot box.