What is the fine-grained topic of the following text: Here’s Greek guitarist Smaro Gregoriadou playing Bach’s Sarabande from the 1st Cello Suite, BWV 1007, on a gorgeous 1962 Ignacio Fleta spruce-top – a stunning sounding guitar from one of the world’s most revered luthiers. Only return the topic.
Smaro Gregoriadou playing Bach's Sarabande on a 1962 Ignacio Fleta spruce-top guitar