Adele says she wrote upcoming album for her son

Adele is one of the world's best-selling music artists (Photo: Danny Moloshok/ Reuters)

Adele said she recorded her upcoming fourth album to explain her divorce to her young son, as the British singer prepares to make her musical comeback.

In what Vogue magazine said was her first interview in five years, the singer-songwriter described the record, which follows her 2015 Grammy Award-winning "25", as "sensitive".