Complex sentence: Sykes co-wrote the majority of the songs on Whitesnake's 1987 self-titled album with David Coverdale, and recorded the guitar as well as some backing vocal tracks.
Split into simpler sentences: Sykes co-wrote the majority of the songs on Whitesnake's 1987 self-titled album with David Coverdale. Sykes recorded guitar parts, as well as some backing vocal tracks.