Complex sentence: In 1971, as well as recording two albums as part of Steeleye Span, they recorded "Summer Solstice"-a much more professional recording than their first two albums, including a string arrangement by Robert Kirby, better known for his work with Nick Drake.
Split into simpler sentences: In 1971, as well as recording two albums as part of Steeleye Span, they recorded "Summer Solstice". It was a much more professional recording than their first two albums, including a string arrangement by Robert Kirby, better known for his work with Nick Drake.