Covers:

1967:

Malcolm Roberts [as Time Alone Will Tell, hit UK]

1967:

Connie Francis [idem]

1967:

Jerry Vale [idem]

1967:

Gerhard Wendland [as Denke nicht an mich]

1967:

Mireille Mathieu [as Quand tu t'en iras]

1967:

Trea Dobbs [as Leef]

1972:

Ronnie Tober [idem]

1972:

Corry Brokken [as Mensen Van De Aarde]

1986:

André Hazes