By Lys Assia
Refrain won the 1956 Eurovision Song Contest.
The Swiss backing group is the Quintetto Vocale Radiosa. The group's membership changed over the years and it is not certain who sang on the night. The vocalists listed here are those who appear to have made up the group at the time of the Contest, based on the article Music in Italian-speaking Switzerland by Carlo Piccardi.
A rundown of this year's spokespeople, how most of them have been involved before and who the current most frequent spokespeople are.
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