Does anyone know wht the name of the song was the Cleo Laine recorded with James Galway?

Question

The song goes something like "How, where, Why When....." and is sung to the sound of Pachobelle's "Earth Angel"

Answer 1

boopy doo dapp di dididi.......dada da dooey da day

Answer 2

They released an album together called "Sometimes when we Touch". The song to Pachelbel's Canon in D is called "How, where, when" and is one of the tracks on the album.