How can you check if you are playing in tune? (Readjust your bow grip, check your left hand position)

Which book cover has these characteristics? made using the gold tooling process on leather

Anarrative piece of are ? a. tells a story or series of event b. serves as a remembrance of an event person c. display the likeness of a person, in order to document their existence d. relates the lives of important individuals

Explain briefly why it's to choose a chord progression before developing the harmony.