"When" is a popular song written by Jack Reardon and Paul Evans and published in 1958.
The biggest hit version was recorded by The Kalin Twins in 1958, a chart-topper in the UK Singles Chart for five weeks, and No. 5 in the US Billboard Hot 100. In The Netherlands the song charted for 30 weeks and was also a number one for 5 weeks.
In 1977, Showaddywaddy had a UK No. 3 hit with the song.
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