"That Once in a Lifetime" is a song by Greek singer Demis Roussos and was also released as a single from his 1978 English-language album Demis Roussos.
The song was written by Dino Fekaris and Freddie Perren.
The recording was produced by Freddie Perren.
50 on the Billboard Easy Listening chart on the week of June 3, 1978[3] and at no.
47 on the Billboard Hot 100 on the week of July 22, 1978.