Barbara Ruth Dickson is a Scottish singer and actress whose hits include "I Know Him So Well", "Answer Me" and "January February". Dickson has placed fifteen albums on the UK Albums Chart from 1977 to date, and had a number of hit singles, including four which reached the top 20 on the UK Singles Chart. The Scotsman newspaper has described her as Scotland's best-selling female singer in terms of the numbers of hit chart singles and albums she has achieved in the UK since 1976.

"I Know Him So Well" is a duet from the concept album and subsequent musical Chess by Tim Rice, Benny Andersson and Björn Ulvaeus. It was originally sung by Elaine Paige and Barbara Dickson. In this duet, two women – Svetlana, the Russian chess champion's estranged wife, and Florence, his mistress – express their bittersweet feelings for him and at seeing their relationships fall apart.