Complex sentence: Wispelwey is comfortable playing the modern cello with either metal or gut strings as well as the baroque four-and five-string cello, which allows him a repertoire ranging from Bach to Elliott Carter.
Split into simpler sentences: Wispelwey is comfortable playing the modern cello with either metal or gut strings as well as the baroque four-and five-string cello. This allows him a repertoire ranging from Bach to Elliott Carter.