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Before the San Diego Padres-Los Angeles Dodgers game Saturday night, 100 members of the San Diego Gay Men's Chorus took the field to perform the national anthem.

Instead of the crowd hearing the chorus, however, a recording of a woman's voice singing "The Star-Spangled Banner" was played over the loudspeakers.

Members of the chorus, who were supposed to be singing the anthem at the "Pride Night" game, say they are shocked and embarrassed by the incident.

"I really want to believe that it was an error," said Bob Lehman, executive director of the group. "But the first thought was, did they do this on purpose?"

The Padres issued a statement, apologizing for the incident:

This evening, during the pregame ceremony, a mistake was made in the Petco Park control room that prevented the San Diego Gay Men’s Chorus from performing the National Anthem as scheduled. We apologize to anyone in the ballpark who this may have offended, and have reached out to the Chorus to express our deep regret for the error.

The choir is calling on the San Diego city attorney’s office and the San Diego human relations commission to investigate the incident.

Watch the video above.

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