What is the tone quality of a sound and it is what to distinguish one musical instrument from another? pitch form timbre harmony

Which music device can composers use to lengthen a note by double? a.staccato b.tenuto c.marcato d.fermata e.rubato

This nineeteenth-century painting is an excellent example of the use of color theory. the artist used adjacent dots and dashes of different hues that appear to blend and form new hues when viewed from a distance. which painting is it?

(fill in the blank) an octave contains lines, a quatrain contains lines, and a sestet contains lines.