Complex sentence: The Coimbra fado is accompanied by either a Portuguese guitar or by a classical guitar; the tuning and sound coloring of the Portuguese guitar in Coimbra are quite different from that of Lisbon.
Split into simpler sentences: The Coimbra fado is accompanied by either a Portuguese guitar or by a classical guitar. The tuning and sound coloring of the Portuguese guitar in Coimbra are quite different from that of Lisbon.