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This is Scientific American's 60-second. I'm Christopher in Taliatta.

Happy birthday. Ever noticed how when a big group sings happy birthday? The beginning is a jumbled

mess with everyone singing a slightly different pitch, but then near the end,

it all sort of comes together. That's because we tend to adjust our own singing pitch to accommodate

others, and now scientists in the UK have found that even trained choral singers will follow

their fellow choir members, but not necessarily in the right direction. The researchers asked eight pairs of musically trained amateur singers, all women for this study,

to sing a cappella the melody of either silent night,

or another classic choir tune, O Sacred Head Now Wounded.

Individual volunteers all sang in their own separate studios, under four different scenarios.

Each singer was completely isolated, hearing only themselves, or singer one got to hear singer two,

or singer two got to hear singer two, or singer two got to hear singer one, or finally,

both singers could hear each other.

Then the researchers used software to extract pitch information from the recordings.

And what they found was that singers stayed more on tune with the pitch written in the musical score

when singing solo versus singing with a partner.

And when one partner veered off pitch, the other singer followed her, perhaps to compensate for the error.

Meaning, even though they

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