I Don't Know How to Love Him by Helen Reddy and Yvonne Elliman, since the 1950s when multi-version chartings were common. "I Don't Know How to Love Him" had originally been published with different lyrics in the autumn of 1967, the original title being "Kansas Morning". The melody's main theme has come under some scrutiny for being non-original, being compared to a theme from Mendelssohn's Violin Concerto in E Minor. In December 1969 and January 1970, when Andrew Lloyd Webber and Tim Rice completed "Jesus Christ Superstar", Rice wrote new lyrics to the tune of "Kansas Morning" to provide the solo number for the character of Mary
I Don't Know How to Love Him in the Republic of Ireland where Tina & Real McCoy took it to No. 1 in December 1971. In January 1972 the version by Petula Clark was released in the UK to chart at No. 42 marking Clark's final appearance on the UK Singles chart except for the 1988 remix of her 1964 hit "Downtown". Clark's "I Don't Know How to Love Him" was to be her final single release on Pye Records. Concurrent with Clark's version, the original Yvonne Elliman track was issued as a single on a double A-side with "Superstar" by Murray Head; this single peaked at