Complex sentence: "One Fine Day" is a popular song by songwriters Gerry Goffin and Carole King which was a hit in the summer of 1963 for girl group the Chiffons, and in the time since that original hit it has been covered by numerous artists.
Split into simpler sentences: One Fine Day is a popular song written in 1963 by songwriters Gerry Goffin and Carole King. It was a hit that year for girl group the Chiffons, and in the time since that original hit it has been covered by numerous artists.