What makes Suddenly by Cliff Richard notable?

The title track 'Suddenly' became a major hit, reaching the top of the charts in several countries and solidifying Newton-John's status as a versatile artist. This album also marked a notable collaboration with British singer Cliff Richard, further expanding her international appeal. Released on October 24, 1980, 'Suddenly' came during Olivia Newton-John's peak commercial phase, following her massive success with 'Grease' (1978). The album showcased her transition into more adult contemporary sounds while still retaining elements of her earlier country and pop roots.