In 1966, Esther & Abi Ofarim had their first hit with "Noch einen Tanz." It peaked at No. 32 in Germany and No. 6 in Austria. In December 1966, they donated $2,500 to the Delphin Foundation for Crippled Children in Germany. The gift was in appreciation of the response by the German public to their albums "Neue Songs Der Welt (New Songs of the World)" and "Das Neue Esther & Abi Ofarim Album (The New Esther & Abi Ofarim)". They became the top-selling pop act in West Germany since the war. Their album "The New Esther & Abi Ofarim", which was produced by Abi, topped the German pop charts for many weeks. Their albums sold more than one million copies in Germany alone by 1967. At the height of their success in Germany, the duo were banned on Israeli Radio for a few years due to Germany–Israel relations. Despite the ban, which was implemented in 1963, "The New Esther & Abi Ofarim" was released as "Sing Hallelujah!" in Israel on Litratone Records in 1966. The duo achieved their biggest hit in Germany with "Morning of My Life", which was written by the Bee Gees, peaking at No. 2 in 1967. They performed the song on the television special "Gala-Abend der Schallplatte 1967" "(Gala Disk Evenings 1967)", the first color telecast in Europe, transmitted by Eurovision from Berlin. In 1967, Esther & Abi Ofarim embarked on a successful international tour which included performances in the US and at The Savoy in London. Later that year, they released the album "2 In 3", which topped the German Albums chart and reached No. 6 on the UK Albums chart. The duo also received their third gold disk for one million international album sales. While appearing on "The Smothers Brothers Comedy Hour" in 1967, the duo were presented with the song "Cinderella Rockefella", a novelty love duet written by Mason Williams and Nancy Ames. Esther & Abi Ofarim's performance of the song on the UK television show "The Eamonn Andrews Show" catapulted the song to success on the charts. It topped the UK Singles chart for three weeks in early 1968 and sold half a million copies. The single peaked at No. 68 on the US "Billboard" Hot 100 and reached the top 10 in several European countries.