the derek and the dominos recording of the song layla featured the playing of which famous blues-rock guitarist?

Yes and no because if you know the vocabulary used you will understand it and go faster but you might not need it

Not 100% sure on the answer but i’d say universal as i don’t see why it would be in the definition

It has been trivialized in ads and cartoons.

Tapestry  was designed to be viewed vertically. understanding its design requires considering its artistic format. wall hangings were common forms of art beginning in the 10th   century. the artist thus used this artistic form of a wall hanging to create a continuous flow of visual narration; a historical account created with an artistic medium. styles unique to this work such as the use of white space to allow imaginative infinite space provide this particular historical narrative with added artistic value.