Second single, 'Secret Land', met with even greater success and is now considered one of Sandra's biggest hits while 'We'll Be Together', released as the third single to a big success, was the first song co-written by Sandra. In order to promote Sandra's music in th English-speaking world, another compilation was released at the end of 1988, Everlasting Love. The album failed to enter charts, but included a PWL remix of the title track which charted at number 45 in the UK. 1989 saw the release of the final single from Into a Secret Land, 'Around My Heart', which became another chart hit, while at that point the album itself was her best-selling offering.
With animal rights and nature conservation high on her personal agenda, Sandra took part in recording a song 'Yes We Can' together with 15 other musicians as a part of the project Artists United for Nature. ġ999 saw the release of My Favourites, a double disc album featuring remixes of Sandra's older songs and some of her favourite ballads. It was a success, charting within the top 20 in some European countries.
