Complex sentence: John Legend's "All of Me" and Pharrell's "Happy"--and was credited for the design of the "intricately calibrated long-term" plan for Hozier's multi-platinum debut album.
Split into simpler sentences: John Legend's "All of Me" and Pharrell's "Happy". He was credited for the design of the "intricately calibrated long-term" plan for Hozier's multi-platinum debut album.