Complex sentence: In the early stages in their career, Jacky Cheung and Leon Lai sang songs with Japanese melodies, but in the early to mid- 1990s there was a public call for originality in local music.
Split into simpler sentences: In the early stages in their carrier Jacky Cheung and Leon Lai sang songs with Japanese melodies. But in the early to mid 1990s there was a public call for originality in local music.