1 course: One meaning is a dish in a big meal, such as the Chinese Manchu-Han Banquet, one of the dishes can be said to be course. The course here can be understood as one of the eight scales
The meaning of the whole sentence is that when most Europeans tune an instrument, they first tune one of the four strings to an eight. The lowest tone in the scale, and then the remaining three strings are tuned to the same tone. The Italians are different. They first tune two of the strings to the lowest tone, and then tune the other two strings to the same tone.
2 The musical word strum means playing
The musical word pluck means plucking
The whole sentence means: in the early days, chitarra battente is just a strummed instrument, but in the 16th century, the plucked string playing technique was added, becoming an instrument that can be played both by strumming and plucked strings
3 striking means Eye-catching
The whole sentence means: His eye-catching guitars are made and decorated with materials like ivory, tortoise shell, ebony, gold, silver, mother-of-pearl< /p>
Last time you turned off the question, which caused my translation to be lost. Now I have re-translated it. I hope it will be useful to you