What was Cliff Richard's contribution for the UK to the 1968 Eurovision Song Contest called?

Explanation

Cliff Richard participated twice in the ESC for the UK. In 1968 he was close to victory with the song "Congratulations" which ended up in second position, just 1 point after the Spanish winning entry "La la La". "Congratulations" later became a big hit in Europe. In 1973, Cliff Richard came third with the song "Power to All Our Friends".