The 1957 Gina Lollobrigida, 45rpm, flexi-disc post card is quite the collector's item these days (Die Tönende Ansichtskarte Nr.524.)
The other songs in this grouping rarely appear as instrumentals. Zacharias' easy listening cover, with its minimalist, token vocals, set the trend for many of the early sixties albums on which Yellow Bird appeared sans English.
Polydor eventually came around and changed the song title and credits to The 'Bird' in 1961 but the first pressing title still gets a reissue now and then. I understand the latter is a reference to the origins of 'classical' calypso but who knows.